Since we have a PS4 speculation thread, it only makes sense to have an Xbox 720 one.   I think it's safe to assume that it will come with Kinect 2.0 bundled in, and it wouldn't surprise me if all launch games had to use it.   There's also this concept Microsoft showed off:     Although this looks more like a possible accessory rather something that will be bundled in (as it would be usable in limited homes and looks expensive).