Where did you hear this? I know that Aonuma has mentioned toying around with this idea, but I'm pretty sure Nintendo would still make sure it feels like a Zelda game. They've never been one to completely change the feel of a series. And yea, I wouldn't count too much on Zelda U looking like the tech demo. Not that it couldn't, but like gamestabled said, it was merely to show off the capabilities of the WiiU. Just look back to Space World 2000 where Nintendo showed off a realistic looking Zelda GameCube tech demo, but what we got 2 years later was Wind Waker. Just expect anything.