Ok I have this feeling that kinect will be compatible with XboxNext, the system has about 2 years left before next gen kicks off and I feel that kinect is simply too 'new' to be left with the old system to rot, I am convince that kinect will either be forward compatible or a new iteration of i will be made availible on the Xbox next with the ability to play current gen Kinect game.
Hence I will made a prediction that Kinect will sell over 60 million in its lifetime and 22 million before Jan 2012