Pretty much everything is working right now, so it’s touted to be good enough to use for your daily phone, but there are some known issues: the FM Radio doesn’t work and neither does wireless tethering. Other than that, the hardware acceleration works, audio, touch, WiFi, Android Market, contacts and calendar sync, face unlock, GPS and more.
If you’re keen on giving your Samsung Galaxy S a new breath of life, head over to the XDA-Developers thread for instructions and links to the files. Let us know how it goes.