Have not seen any verification that the required Kinect 2.0 in Xbox One will be USB 2.0 or 3.0. Since it comes with 3.0 ports, I'm worried. It isn't a matter of pulling cable to support it, there is no current way to extend USB 3.0 that I know of.
Since they are requiring it be used, maybe they will put some thought into this for projector users and make a wireless option or at least make it work over USB 2.0.
UMR on HDR vs 4K: The benefit of greater saturation and luminance capability is...not very evident in all images unlike more pixels which can be seen in every scene.