The one on USCIS website is expired,

來源: 於 2008-09-18 09:02:22 [舊帖] [給我悄悄話] 本文已被閱讀：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.