Finally, we get FaceTime over 3G in iOS 6.0 and having tested this out with iPhone 4s -> iPad 3, it's great! No more needing to jb at all. Siri on the new iPad is also a very welcome addition - just very sad my 2 other iPad 2's can't run siri???
superb feature worth waiting for!! just wished they allowed flash on iOS as steve jobs is long gone!! no one to object!!