As some people will recall, the Ice Cream Sandwich update for the Galaxy S II was based on Android 4.0.3, however, this new one bound for the international version is sporting a slightly newer 4.0.4 firmware. From the sound of it all, the 4.0.4 firmware was finalized not too long ago – more specific, this new “XWLPM” firmware was built on July 5th. Furthermore, it’s currently available as an over-the-air update and through the conventional Kies process, though, it’s being made available to unlocked Russian handsets initially.
Although it’s a very minor bump, this new version includes a new radio firmware as well – but beyond that, there isn’t anything else prevalent with it. Nevertheless, if you own the handset, it’s best to keep on checking for that update. Seeing that the international version is typically the one to see new updates first, it’s only a matter of time before carriers will get the update to test out on their handsets – albeit, it can be a lengthy process for some.
source: Sammy Hub via Android Central