The most interesting thing I noticed is the change from the RGB + IR depth camera setup found in Kinect 1 to a single 1080p 30fps RGB camera using time-of-fligh

The most interesting thing I noticed is the change from the RGB + IR depth camera setup found in Kinect 1 to a single 1080p 30fps RGB camera using time-of-flight for depth imaging. Microsoft made some really cool advancements in body tracking and recognition with the original Kinect, and it seems they are still pushing the boundaries of 3D imaging with cheap hardware.