SCHEDULE 13G 
 
Amendment No. 8 
Devon Group Incorporated 
Common Stock 
Cusip # 251801106 
 
 
Cusip # 251801106 
Item 1:	Reporting Person - FMR Corp. 
Item 4:	Commonwealth of Massachusetts 
Item 5:	None 
Item 6:	None 
Item 7:	None 
Item 8:	None 
Item 9:	None 
Item 11:	0.00% 
Item 12:	HC  
 
 
 
 
Cusip # 251801106 
Item 1:	Reporting Person - Edward C. Johnson 3d  
Item 4:	United States of America 
Item 5:	None 
Item 6:	None 
Item 7:	None 
Item 8:	None 
Item 9:	None 
Item 11:	0.00% 
Item 12:	IN  
 
 
 
Cusip # 251801106 
Item 1:	Reporting Person - Abigail P. Johnson  
Item 4:	United States of America 
Item 5:	None 
Item 6:	None 
Item 7:	None 
Item 8:	None 
Item 9:	None 
Item 11:	0.00% 
Item 12:	IN  
 
 
 
SCHEDULE 13G - TO BE INCLUDED IN STATEMENTS 
FILED PURSUANT TO RULE 13d-1(b) or 13d-2(b) 
 
 
Item 1(a).	Name of Issuer: 
 
		Devon Group Incorporated 
 
Item 1(b).	Name of Issuer's Principal Executive Offices: 
 
		Six Stamford Forum, Suite 501 
		Stamford, CT  06901-3277 
 
Item 2(a).	Name of Person Filing:  
 
		FMR Corp. 
 
Item 2(b).	Address or Principal Business Office or, if None, Residence: 
 
		82 Devonshire Street, Boston, Massachusetts  02109 
 
Item 2(c).	Citizenship: 
 
		Not applicable 
 
Item 2(d).	Title of Class of Securities: 
 
		Common Stock 
 
Item 2(e).	CUSIP Number:   
 
		251801106 
 
Item 3.	This statement is filed pursuant to Rule 13d-1(b) or 13d-2(b) and the  
person filing, FMR Corp., is a parent holding company in accordance  
with Section 240.13d-1(b)(ii)(G).  (Note:  See Item 7). 
 
Item 4.	Ownership 
 
	(a)	Amount Beneficially Owned: 
	None 
 
	(b)	Percent of Class: 
	0.00% 
 
	(c)	Number of shares as to which such person has:   
 
	(i)	sole power to vote or to direct the vote: 
	None 
 
	(ii)	shared power to vote or to direct the vote: 
	None 
 
	(iii)	sole power to dispose or to direct the disposition of: 
	None 
 
	(iv)	shared power to dispose or to direct the disposition of: 
	None 
 
 
 
 
Item 5.	Ownership of Five Percent or Less of a Class. 
 
	If this statement is being filed to report the fact that as of  
the date hereof, the reporting person has ceased to be the  
beneficial owner of any of the class of securities, check the  
following (X). 
 
Item 6.	Ownership of More than Five Percent on Behalf of Another Person. 
 
	Not applicable. 
 
Item 7.	Identification and Classification of the Subsidiary Which Acquired  
the Security Being Reported on By the Parent Holding Company. 
 
	Not applicable. 
 
Item 8.	Identification and Classification of Members of the Group. 
 
	Not applicable.  
 
Item 9.	Notice of Dissolution of Group. 
 
	Not applicable. 
 
Item 10.	Certification. 
 
	Inasmuch as the reporting persons are no longer the beneficial  
owners of any of the number of shares outstanding, the  
reporting persons have no further reporting obligation under  
Section 13(d) of the Securities and Exchange Commission  
thereunder, and the reporting persons have no obligation to  
amend this Statement if any material change occurs in the facts  
set forth herein. 
 
 
Signature 
 
	After reasonable inquiry and to the best of my knowledge and  
belief, I certify that the information set forth in this  
Schedule 13G in connection with FMR Corp.'s beneficial  
ownership of the common stock of Devon Group Incorporated at  
May 31, 1998 is true, complete and correct.  
 
 
	June 9, 1998	 
Date 
 
 
 
	/s/Eric D. Roiter 
Signature 
 
 
 
	Eric D. Roiter	 
Duly authorized under Power of  
Attorney 
dated December 30, 1997, by  
and on behalf 
of FMR Corp. and its direct  
and indirect 
subsidiaries