JOHN HANCOCK SOVEREIGN BOND

John Hancock Bond Fund

Class A, Class B, Class C, Class I and Class R1 Shares

Supplement to the Statement of Additional Information (“SAI”)

dated October 1, 2006

The following new paragraphs have been added to the Fund’s SAI as described below:

In the INVESTMENT OBJECTIVES AND POLICIES section, in the “Lending of Securities” subsection for the Fund, the paragraph below has been deleted:

“The Fund may lend portfolio securities to brokers, dealers and financial institutions if the loan is collateralized by cash or U.S. Government securities according to applicable regulatory requirements. The Fund may reinvest any cash collateral in short-term securities and money market funds. When the Fund lends portfolio securities, there is a risk that the borrower may fail to return the securities involved in the transaction. As a result, the Fund may incur a loss or, in the event of the borrower’s bankruptcy, the Fund may be delayed in or prevented from liquidating the collateral. It is a fundamental policy of the Fund not to lend portfolio securities having a total value exceeding 33 1/3% of its total assets.”

and replaced with:

“The Fund may lend its securities so long as such loans do not represent more than 33 1/3% of the Fund’s total assets. As collateral for the lent securities, the borrower gives the lending portfolio collateral equal to at least 100% of the value of the lent securities. The collateral may consist of cash or securities issued or guaranteed by the U.S. government or its agencies or instrumentalities. The borrower must also agree to increase the collateral if the value of the lent securities increases. As with other extensions of credit, there are risks that collateral could be inadequate in the event of the borrower failing financially, which could result in actual financial loss, and risks that recovery of loaned securities could be delayed, which could result in interference with portfolio management decisions or exercise of ownership rights. The collateral is managed by an affiliate of the Adviser. In addition, the Fund may lose its right to vote its shares of the loaned securities at a shareholders meeting unless it recalls the loaned securities in advance of the record date for the meeting. The Fund has entered into an agreement with Morgan Stanley & Co. Incorporated and MS Securities Services Inc. (collectively, “Morgan Stanley”) which permits the Fund to lend securities to Morgan Stanley on a principal basis. It is presently anticipated that Morgan Stanley will be the primary borrower of securities of the Funds. The risk of having one primary borrower of Fund securities (as opposed to several borrowers) is that should Morgan Stanley fail financially, all securities lent will be affected by the failure and by any delays in recovery of the securities (or in the rare event, loss of rights in the collateral).”

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In the INVESTMENT OBJECTIVES AND POLICIES section, in the “Portfolio Holdings Disclosure Policy” subsection for the Fund, the sentence below has been deleted:

“A description of the Fund’s portfolio holding disclosure policy is attached to this Statement of Additional Information as Appendix D.”

and replaced with:

“The Board of Trustees of John Hancock Funds (“JHF”) has adopted the Policy Regarding Disclosure of Portfolio Holdings, see Appendix D of this SAI, to protect the interests of the shareholders of JHF and to address potential conflicts of interest that could arise between the interests of shareholders and the interests of the Adviser, or the interests of a fund’s subadvisers, principal underwriter or affiliated persons of a fund’s Adviser or principal underwriter. JHF’s general policy with respect to the release of portfolio holdings to nonaffiliated persons is to do so only in limited circumstances and only to provide nonpublic information regarding portfolio holdings to any person, including affiliated persons, on a “need to know” basis and, when released, to release such information only as consistent with applicable legal requirements and the fiduciary duties owed to shareholders. JHF applies its policy uniformly to all parties, including individual and institutional investors, intermediaries, affiliated persons of a fund, and to all third party service providers and rating agencies.

JHF posts on the fifth business day after month-end, the following information for each fund will be posted on www.jhfunds.com: top ten holdings (% of each position); top ten sector analysis; total return/yield; top ten countries/SIC; average quality/maturity; beta/alpha/r2 (open-end funds only); top ten portfolio composition; number of holdings; and bond fund duration. JHF posts to its Web site at www.jhfunds.com complete portfolio holdings for a fund thirty (30) days after each calendar month end. A fund also discloses its complete portfolio holdings information quarterly to the SEC using Form N-Q within 60 days of the end of the first and third quarter ends of JHF’s fiscal year and on Form N-CSR on the second and fourth quarter ends of JHF’s fiscal year. Form N-Q is not required to be mailed to shareholders, but is made public through the SEC electronic filings. Shareholders receive either complete portfolio holdings information or summaries of a fund’s portfolio holdings with their annual and semi-annual reports.

Portfolio holdings information that is not publicly available will be released only pursuant to the exceptions described in the Policy Regarding Disclosure of Portfolio Holdings. Material nonpublic holdings information may be provided to nonaffiliated persons as part of the investment activities of a fund to: entities which, by explicit agreement, are required to maintain the confidentiality of the information disclosed; rating organizations, such as Moody’s, S&P, Morningstar and Lipper; or other entities for the purpose of compiling reports and preparing data; proxy voting services for the purpose of voting proxies; entities providing computer software; courts (including bankruptcy courts) or regulators with jurisdiction over JHF, and its affiliates; and, institutional traders to assist in research and trade execution. Exceptions to the portfolio holdings release policy can only be approved by JHF’s Chief Compliance Officer (“CCO”) or his duly authorized delegate after considering: (a) the purpose of providing such information; (b) the procedures that will be used to ensure that such information

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remains confidential and is not traded upon; and (c) whether such disclosure is in the best interest of the shareholders.

At this time, the entities receiving information described in the preceding paragraph are: Vestek (holdings, monthly with 30 day lag); Morningstar (holdings, monthly with 32 day lag); Lipper (holdings, monthly with 32 day lag); Fact Set (holdings, daily); PricewaterhouseCoopers (prices, annual audits); Confluence (holdings, daily); ISS (holdings, daily); Elkins McSherry (purchases and sales, quarterly); NASDQ (NAVs, daily); Charles River (holdings and securities details, daily); and DST (NAVs, daily).

The CCO is also required to pre-approve the disclosure of nonpublic information regarding portfolio holdings to any affiliated persons of JHF. The CCO will use the same three considerations stated above before approving disclosure of nonpublic information to affiliated persons.

The CCO shall report to the Board of Trustees whenever additional disclosures of portfolio holdings are approved. The CCO’s report shall be at the Board meeting following such approval.

When the CCO believes that the disclosure of nonpublic information to a nonaffiliated person is a potential conflict of interest between the interest of the shareholders and the interest of affiliated persons of JHF, the CCO shall refer the conflict to the Board of Trustees. The Board of Trustees shall then only permit such disclosure of the nonpublic information if in their reasonable business judgment they conclude such disclosure will be in the best interests of JHF’s shareholders.

The receipt of compensation by a fund, the Adviser, a subadviser or an affiliate as consideration for disclosing nonpublic portfolio holdings information is not deemed a legitimate business purpose and is strictly forbidden.”

In the INVESTMENT ADVISORY AND OTHER SERVICES section, in the “Proxy Voting” subsection for the Fund, the paragraph below has been deleted:

“The Fund’s Trustees have delegated to the Adviser the authority to vote proxies on behalf of the Fund who in turn has made contractual arrangements for the Fund’s Sub-Adviser to vote proxies relating to securities held by the Fund. A summary of the Sub-Adviser’s proxy voting guidelines is attached to this statement of additional information as Appendix C. Information regarding how the Fund voted proxies relating to portfolio securities during the 12-month period ending June 30, 2006 is available by calling 1-800-225-5291 or on the Fund’s website: www.jhfunds.com/proxy or on the SEC’s website at www.sec.gov.

and replaced with:

“The Trust’s proxy voting policies and procedures (the “Trust’s Procedures”) delegate to the Subadviser the responsibility to vote all proxies relating to securities held by that portfolio in accordance with the Subadviser’s proxy voting policies and procedures. A Subadviser has a duty to vote such proxies in the best interests of the portfolio and its shareholders. Complete

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descriptions of the Trust’s Procedures and the proxy voting procedures of the Subadviser are set forth in Appendix C to this SAI.

It is possible that conflicts of interest could arise for a Subadviser when voting proxies. Such conflicts could arise, for example, when the Subadviser or its affiliate has a client or other business relationship with the issuer of the security being voted or with a third party that has an interest in the vote. A conflict of interest could also arise when the Trust, its investment adviser or principal underwriter or any of their affiliates has an interest in the vote.

In the event a Subadviser becomes aware of a material conflict of interest, the Trust’s Procedures generally require the Subadviser to follow any conflicts procedures that may be included in the Subadviser’s proxy voting procedures. Although conflicts procedures will vary among subadvisers, they generally include one or more of the following:

(a) voting pursuant to the recommendation of a third party voting service;

(b) voting pursuant to pre-determined voting guidelines; or

(c) referring voting to a special compliance or oversight committee.

The specific conflicts procedures of the Subadviser are set forth in its proxy voting procedures included in Appendix C. While these conflicts procedures may reduce, they will not necessarily eliminate, any influence on proxy voting of conflicts of interest.

Although the Subadviser has a duty to vote all proxies on behalf of the portfolios it subadvises, it is possible that the subadviser may not be able to vote proxies under certain circumstances. For example, it may be impracticable to translate in a timely manner voting materials that are written in a foreign language or to travel to a foreign country when voting in person rather than by proxy is required. In addition, if the voting of proxies for shares of a security prohibits the subadviser from trading the shares in the marketplace for a period of time, the Subadviser may determine that it is not in the best interests of the portfolio to vote the proxies. A subadviser may also choose not to recall securities that have been lent in order to vote proxies for shares of the security since the portfolio would lose security lending income if the securities were recalled.

Information regarding how the Trust voted proxies relating to portfolio securities during the most recent 12-month period ended June 30^th is available (1) without charge, upon request, by calling (800) 344-1029 (attention: Gordon Shone) and (2) on the SEC’s website at http://www.sec.gov.

Effective July 1, 2007, under the “SALES COMPENSATION” section, in the “Annual Compensation” subsection, the last sentence below has been deleted:

“These service and distribution fees are paid quarterly in arrears.”

and replaced with:

“These service and distribution fees are paid monthly in arrears.”

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Effective July 1, 2007, under the “SALES COMPENSATION” section, in the “First Year Broker or Other Selling Firm Compensation” chart, in the second footnote, the fourth sentence below has been deleted:

“Quarterly payments are made in arrears.”

and replaced with:

“Monthly payments are made in arrears.”

Appendix C is deleted and replaced in its entirety as below:

APPENDIX C

PROXY VOTING SUMMARIES OF THE ADVISER AND SUBADVISER

John Hancock Advisers, LLC

Proxy Voting Policies and Procedures

Table of Contents

I. Delegation of Proxy Voting to Subadvisers

A. Delegation

B. Proxy Voting Policies and Procedures

C. Underlying Funds

II. Material Conflicts of Interest

III. Procedures for Shareholders/Contract Owners to Obtain Proxy Voting Policies and Proxy Voting

IV. Record. Disclosure of Proxy Voting Procedures

A. Disclosure of Procedures in the Statement of Additional Information of the Trust

B. Disclosure in Annual and Semi-Annual Report

C. Filing of Proxy Voting Record on Form N-PX

Annual Approval of Proxy Voting Policies and Procedures * * *

I. Delegation of Proxy Voting to Subadvisers

A. Delegation

The subadviser for each Trust portfolio shall vote all proxies relating to securities held by the portfolio and in that connection, and subject to any further policies and procedures contained herein, shall use proxy voting policies and procedures adopted by the subadviser in conformance with Rule 206(4)-6 under the Investment Advisers Act of 1940.

B. Proxy Voting Procedures

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Except as noted under I.C. below, the proxy voting policies and procedures for each Trust portfolio shall be the same as those used by the portfolio’s subadviser to vote proxies for the Trust portfolio. The proxy voting policies and procedures of the subadviser to each Trust portfolio relating to voting proxies of each Trust portfolio it manages, as such policies and procedures may be amended from time to time (the “Subadviser Proxy Voting Procedures”), are hereby incorporated into these policies and procedures by reference.

C. Underlying Funds

With respect to voting proxies relating to the securities of an underlying fund held by a Trust portfolio in reliance on any one of Sections 12(d)(1)(E), (F) or (G) of the Investment Company Act of 1940, or to the extent disclosed in the Trust's registration statement, the subadviser for the Trust portfolio, or the Trust, will vote proxies in the same proportion as the vote of all other holders of such underlying fund securities, unless the Trust intends to seek voting instructions from the shareholders of the Trust portfolio, in which case the subadviser, or the Trust, will vote proxies in the same proportion as the instructions timely received from shareholders of the Trust portfolio.

II. Material Conflicts of Interest

If (1) the subadviser to any Trust portfolio knows that a vote presents a material conflict between the interests of (a) shareholders of the Trust portfolio and (b) the Trust’s investment adviser, principal underwriter or any affiliated person of the Trust, its investment adviser or its principal underwriter, and (2) the subadviser does not propose to vote on the particular issue in the manner prescribed by its pre-determined proxy voting guidelines, then the subadviser will follow its conflict of interest procedures (as set forth in the subadviser’s proxy voting policies and procedures) when voting such proxies.

If the proxy voting policies and procedures of any subadviser indicate that, in the case of any conflict of interest between the interests of shareholders of a Trust portfolio and another party, the subadviser will abstain from voting or will request the Board of Trustees of the Trust to provide voting instructions, the subadviser shall not abstain or make such request but instead shall vote proxies, in its discretion, either as recommended by an independent third party or as the subadviser may determine in its reasonable judgment to be in the best interests of the shareholders of the Trust portfolio.

III. Procedures for Shareholders/Contract Owners to Obtain Proxy Voting Policies and Proxy Voting Record. Disclosure of Proxy Voting Procedures

A. Disclosure of Policies and Procedures in the Statement of Additional Information

The Trusts shall disclose in their Statements of Additional Information a summary of their Proxy Voting Policies and Procedures and of the Subadviser Proxy Voting Procedures

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included therein. (In lieu of including a summary of the procedures, the Trusts may instead include the actual Subadviser Proxy Voting Procedures in the Statements of Additional Information.)

B. Disclosure in Annual and Semi-Annual Report

The Trusts shall disclose in their annual and semi-annual shareholder reports that:

a) a description of the Trusts’ proxy voting policies and procedures and

b) the Trusts’ proxy voting record for the most recent 12 month period ending June 30th, are available:

1. on the SEC’s website, and

2. without charge, upon request, by calling a specified toll-free telephone number. The Trusts will send these documents within three business days of receipt of a request, by first-class mail or other means designed to ensure equally prompt delivery.

C. Filing of Proxy Voting Record on Form N-PX

The Trusts will annually file their complete proxy voting record with the SEC on Form N-PX. The Form N-PX shall be filed for the twelve month period ended June 30th no later than August 31st of each year.

IV. Annual Approval of Proxy Voting Procedures

The Trusts’ proxy voting policies and procedures shall be re-approved by the Trusts’ Boards of Trustees at least annually.

MFC Global Investment Management (U.S.), LLC (“MFC Global (U.S.)”)

formerly known as Sovereign Asset Management, LLC

Proxy Voting Summary

We believe in placing our clients’ interests first. Before we invest in a particular stock or bond, our team of portfolio managers and research analysts look closely at the company by examining its earnings history, its management team and its place in the market. Once we invest, we monitor all our clients’ holdings, to ensure that they maintain their potential to produce results for investors.

As part of our active investment management strategy, we keep a close eye on each company we invest in. Routinely, companies issue proxies by which they ask investors like us to vote for or against a change, such as a new management team, a new business procedure or an acquisition. We base our decisions on how to vote these proxies with the goal of maximizing the value of our clients’ investments.

Currently, MFC Global U.S. manages open-end funds, closed-end funds and portfolios for institutions and high-net-worth investors. Occasionally,

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we utilize the expertise of an outside asset manager by means of a subadvisory agreement. In all cases, MFC Global (U.S.) makes the final decision as to how to vote our clients’ proxies. There is one exception, however, and that pertains to our international accounts. The investment management team for international investments votes the proxies for the accounts they manage. Unless voting is specifically retained by the named fiduciary of the client, MFC Global (U.S.) will vote proxies for ERISA clients.

In order to ensure a consistent, balanced approach across all our investment teams, we have established a proxy oversight group comprised of associates from our investment, operations and legal teams. The group has developed a set of policies and procedures that detail the standards for how MFC Global (U.S.) votes proxies. MFC Global (U.S.)’s other clients have granted us the authority to vote proxies in our advisory contracts or comparable documents.

MFC Global (U.S.) has hired a third party proxy voting service which has been instructed to vote all proxies in accordance with our established guidelines except as otherwise instructed.

In evaluating proxy issues, our proxy oversight group may consider information from many sources, including the portfolio manager, management of a company presenting a proposal, shareholder groups, and independent proxy research services. Proxies for securities on loan through securities lending programs will generally not be voted, however a decision may be made to recall a security for voting purposes if the issue is material.

Below are the guidelines we adhere to when voting proxies. Please keep in mind that these are purely guidelines. Our actual votes will be driven by the particular circumstances of each proxy. From time to time votes may ultimately be cast on a case-by-case basis, taking into consideration relevant facts and circumstances at the time of the vote. Decisions on these matters (case-by-case, abstention, recall) will normally be made by a portfolio manager under the supervision of the chief investment officer and the proxy oversight group. We may abstain from voting a proxy if we conclude that the effect on our clients’ economic interests or the value of the portfolio holding is indeterminable or insignificant.

Proxy Voting Guidelines

Board of Directors

We believe good corporate governance evolves from an independent board.

We support the election of uncontested director nominees, but will withhold our vote for any nominee attending less than 75% of the board and committee meetings during the previous fiscal year. Contested elections will be considered on a case by case basis by the proxy oversight group, taking into account the nominee’s qualifications. We will support management’s ability to set the size of the board of directors and

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to fill vacancies without shareholder approval but will not support a board that has fewer than 3 directors or allows for the removal of a director without cause.

We will support declassification of a board and block efforts to adopt a classified board structure. This structure typically divides the board into classes with each class serving a staggered term.

In addition, we support proposals for board indemnification and limitation of director liability, as long as they are consistent with corporate law and shareholders’ interests. We believe that this is necessary to attract qualified board members.

Selection of Auditors

We believe an independent audit committee can best determine an auditor’s qualifications.

We will vote for management proposals to ratify the board’s selection of auditors, and for proposals to increase the independence of audit committees.

Capitalization

We will vote for a proposal to increase or decrease authorized common or preferred stock and the issuance of common stock, but will vote against a proposal to issue or convert preferred or multiple classes of stock if the board has unlimited rights to set the terms and conditions of the shares, or if the shares have voting rights inferior or superior to those of other shareholders.

In addition, we will support a management proposal to: create or restore preemptive rights; approve a stock repurchase program; approve a stock split or reverse stock split; and, approve the issuance or exercise of stock warrants

Acquisitions, mergers and corporate restructuring

Proposals to merge with or acquire another company will be voted on a case-by-case basis, as will proposals for recapitalization, restructuring, leveraged buyout, sale of assets, bankruptcy or liquidation. We will vote against a reincorporation proposal if it would reduce shareholder rights. We will vote against a management proposal to ratify or adopt a poison pill or to establish a supermajority voting provision to approve a merger or other business combination. We would however support a management proposal to opt out of a state takeover statutory provision, to spin-off certain operations or divisions and to establish a fair price provision.

Corporate Structure and Shareholder Rights

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In general, we support proposals that foster good corporate governance procedures and that provide shareholders with voting power equal to their equity interest in the company.

To preserve shareholder rights, we will vote against a management proposal to restrict shareholders’ right to: call a special meeting and to eliminate a shareholders’ right to act by written consent. In addition, we will not support a management proposal to adopt a supermajority vote requirement to change certain by-law or charter provisions or a non-technical amendment to by-laws or a charter that reduces shareholder rights.

Equity-based compensation

Equity-based compensation is designed to attract, retain and motivate talented executives and independent directors, but should not be so significant as to materially dilute shareholders’ interests.

We will vote against the adoption or amendment of a stock option plan if:

• the compensation committee is not fully independent;

• plan dilution is more than 10% of outstanding common stock;

• company allows or has allowed the re-pricing or replacement

of underwater options in the past three fiscal years (or the exchange of underwater options) without shareholder approval;

• the option is not premium priced or indexed, or does not vest based on future performance.

With respect to the adoption or amendment of employee stock purchase plans or a stock award plan, we will vote against management if:

• the plan allows stock to be purchased at less than 85% of fair market value;

• this plan dilutes outstanding common equity greater than 10%;

• all stock purchase plans, including the proposed plan, exceed 15% of outstanding common equity;

• the potential dilution from all company plans is more than 85%.

With respect to director stock incentive/option plans, we will vote against management if:

• the minimum vesting period for options or time lapsing restricted stock is les than one year;

• the potential dilution for all company plans is more than 85%.

Other Business

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For routine business matters which are the subject of many proxy related questions, we will vote with management proposals to:

• change the company name;

• approve other business;

• adjourn meetings;

• make technical amendments to the by-laws or charters;

• approve financial statements;

• approve an employment agreement or contract.

Shareholder Proposals

Shareholders are permitted per SEC regulations to submit proposals for inclusion in a company’s proxy statement. We will generally vote against shareholder proposals and in accordance with the recommendation of management except as follows where we will vote for proposals:

• calling for shareholder ratification of auditors;

• calling for auditors to attend annual meetings;

• seeking to increase board independence;

• requiring minimum stock ownership by directors;

• seeking to create a nominating committee or to increase the independence of the nominating committee;

• seeking to increase the independence of the audit committee.

Corporate and social policy issues

We believe that “ordinary business matters” are primarily the responsibility of management and should be approved solely by the corporation’s board of directors.

Proposals in this category, initiated primarily by shareholders, typically request that the company disclose or amend certain business practices. We generally vote against business practice proposals and abstain on social policy issues, though we may make exceptions in certain instances where we believe a proposal has substantial economic implications.

MFC Global Investment Management (U.S.), LLC (“MFC Global (U.S.)”)

formerly known as Sovereign Asset Management LLC

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Proxy Voting Procedures

The role of the proxy voting service

MFC Global (U.S.), LLC has hired a proxy voting service to assist with the voting of client proxies. The proxy service coordinates with client custodians to ensure that proxies are received for securities held in client accounts and acted on in a timely manner. The proxy service votes all proxies received in accordance with the proxy voting guidelines established and adopted by MFC Global (U.S.). When it is unclear how to apply a particular proxy voting guideline or when a particular proposal is not covered by the guidelines, the proxy voting service will contact the proxy oversight group coordinator for a resolution.

The role of the proxy oversight group and coordinator

The coordinator will interact directly with the proxy voting service to resolve any issues the proxy voting service brings to the attention of MFC Global (U.S.). When a question arises regarding how a proxy should be voted the coordinator contacts the firm’s investment professionals and the proxy oversight group for a resolution. In addition the coordinator ensures that the proxy voting service receives responses in a timely manner. Also, the coordinator is responsible for identifying whether, when a voting issue arises, there is a potential conflict of interest situation and then escalating the issue to the firm’s Executive Committee. For securities out on loan as part of a securities lending program, if a decision is made to vote a proxy, the coordinator will manage the return/recall of the securities so the proxy can be voted.

The role of mutual fund trustees

The boards of trustees of our mutual fund clients have reviewed and adopted the proxy voting guidelines of the funds’ investment adviser. The trustees will periodically review the proxy voting guidelines and suggest changes they deem advisable.

Conflicts of interest

Conflicts of interest are resolved in the best interest of clients.

With respect to potential conflicts of interest, proxies will be voted in accordance with MFC Global (U.S.)’s predetermined policies. If application of the predetermined policy is unclear or does not address a particular proposal, a special internal review by the MFC Global (U.S.) Executive Committee will determine the vote. After voting, a report will be made to the client (in the case of an investment company, to the fund’s board of trustees), if requested. An example of a conflict of interest created with respect to a proxy solicitation is when MFC Global (U.S.) must vote the proxies of companies that they provide investment advice to or are currently seeking to provide investment advice to, such as to pension plans.

June 21, 2007

21SAIS3 6/07