I think it's possible they may take the interface up a notch. I've seen alot of promising technologies that put even the wiimote idea to shame. I saw one on IGN that was sort of like PSeye times ten. Ridiculously accurate, it could locate each of your finger tips, react based on how many fingers you are holding up, tell the distance you and your appendages are from the TV screen, put an object in your hand and keep it there. It was amazing really, and would allow for true 1:1 motion control without even needing a controller.
That's just one of many new technologies that are out there that they could choose to go with, that would make gaming even more intuitive for the masses. You would could control it accurately and deftly solely with your movements.
Only time will tell.
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