Today is a good day, I think, for source code drops! Samsung has just released the source code for an update for the Epic 4G Touch, Sprint's variant of the Galaxy S II. The update (FF18) is said to be rolling out to devices right now as an OTA. If you want to get your hands on the kernel code to fiddle with it yourself before the update arrives, however, you can head to Samsung's download page here.
Dat source code.
If you're not a developer, chances are this won't be of interest to you. No you can't flash it and yes you're better off waiting for a ROM to be built or the update to rollout to your device. If, however, you stay up late at night dreaming of kernel hacks, then you're really just wasting time reading the rest of my words. Head to the source link below.
Update: The AT&T Skyrocket's kernel is available too! Go grab it!
Thanks Josh, Shawn!