It will be called “FaceIt-3G” and it claims to, well, enable official iPhone 4-only FaceTime video calling option of iOS 4.1 for iPhone 3GS users. The team at iPhoneIslam.comis currently ironing out any remaining bugs that are still lurking the release. We will surely update you once this tweak is available for download. In the meantime, you can check out the video below which shows FaceTime in action on iPhone 3GS !
UPDATE 1: FaceTime hack for iPhone 3GS is now available on Cydia. Follow the instructions posted here to install it.