Update: The mod is now available from XDA Developers
One of the best features of the Galaxy S II, its 8 MP camera, is about to get even better thanks to an upcoming unofficial mod/hack that will improve the bitrate and quality of the 1080p video recording function. At stock the SGSII will record 1080p at 16Mbit/s and with pretty ordinary mono sound in AAC format. The mod will push the bitrate up to a beefy 24Mbit/s with 192-bit sound, which will still be in mono due to the Galaxy S II having only one mic, however the improvements will speak for themselves. There is currently no concrete release date on the mod, but you will have to root your device to enable the mod to work its magic.