The build has been revealed to be I777UCKJ1 and will be based around Android Gingerbread 2.3.5 and Samsung’s TouchWiz UI. This firmware update isn’t a major update but it will address certain bugs that have plagued AT&T’s Samsung Galaxy S2, such as a slight lag when pressing the Home button and it looks like it fixes the lockscreen bug too (which had previously allowed non-authorized users to bypass the unlocking code), along with a newly implemented overscroll glow. If you’ve rooted your Galaxy S2 and want to get your hands on this update, head on down to RootzWiki.