The one on USCIS website is expired,

来源: 于 2008-09-18 09:02:22 [旧帖] [给我悄悄话] 本文已被阅读：次

This is the instruction from their website: E

dition Date :
05/27/08. No previous editions accepted.

So I guess as long as it is the new edition, they don't care.