I checked gamespot for an update, and I found one. I don't know if someone has talked about this, but MK II looks a tad different. If you see the pics of the deadpool, they made some graphic upgrades behind the black screens in the background, and in the reflections in the deadpool itself. I think this is pretty neat. I wonder what else there will be!
Check out the pic here: http://www.gamespot.com/xbox/action/midwayarcadetreasuresii/screens.html?page=40

Peace.