[INNOVEDA LOGO]

                                                                  EXHIBIT (a)(8)

                                          April 30, 2002

Dear Stockholder:

     We are pleased to report that on April 23, 2002, Innoveda, Inc. entered
into a Merger Agreement with Mentor Graphics Corporation and Indiana Merger
Corporation, a wholly-owned subsidiary of Mentor Graphics Corporation, that
provides for the acquisition of Innoveda at a price of $3.95 per share in cash.
Under the terms of the proposed transaction, Indiana Merger Corporation has
commenced a tender offer today for all of the outstanding shares of Innoveda
Common Stock at $3.95 per share. Following the completion of the tender offer,
Indiana Merger Corporation will be merged with and into Innoveda and all shares
not purchased in the tender offer (other than those owned by Innoveda, Mentor
Graphics Corporation or Indiana Merger Corporation or by holders who have
perfected their appraisal rights) will be converted into the right to receive
$3.95 per share in cash in the merger.

     Your Board of Directors, at a meeting duly called and held on April 23,
2002, by unanimous vote of all directors present at the meeting: (i) approved
the Merger Agreement and the Offer at $3.95 per share, (ii) determined that the
terms of the Offer and the Merger are fair to, and in the best interests of,
Innoveda and its stockholders, and (iii) recommended that stockholders accept
the Offer and tender their shares to Indiana Merger Corporation. In arriving at
its recommendation, the Board of Directors gave careful consideration to a
number of factors. Among other things, these factors include the opinion of
Robertson Stephens, Inc., financial advisor to Innoveda, that, as of the date of
the opinion and subject to the assumptions, conditions and qualifications set
forth in the written opinion, the cash consideration to be received by the
stockholders pursuant to the offer and the merger is fair to such stockholders
from a financial point of view.

     Accompanying this letter is a copy of Innoveda's
Solicitation/Recommendation Statement on Schedule 14D-9. Also enclosed is
Indiana Merger Corporation's Offer to Purchase and related materials, including
a Letter of Transmittal for use in tendering shares. We urge you to read the
enclosed materials carefully. If you have questions about the Offer you may call
MacKenzie Partners, Inc., Mentor Graphics' information agent for the Offer, at
its address and telephone number set forth on the back cover of the Offer to
Purchase.

     The directors and management of Innoveda thank you for the support you have
given Innoveda.

                                          On behalf of the Board of Directors,

                                          Sincerely,

                                          -s- William J. Herman

                                          William J. Herman
                                          Chief Executive Officer and
                                          Chairman of the Board

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