There was a time when The Legend of Zelda: Skyward Sword might have been a button only affair, with nary a motion control in sight. But Legend of Zelda producer, Eiji Aonuma, explained to Official Nintendo Magazine that he could not imagine going back to classic button controls now. The control scheme from Skyward Sword is likely to continue in future titles. The Wii U controller doesn't seem to fit the bill, not on its own anyway, but I could imagine it being used for things other than direct control.
Aonuma has mentioned before that he wants to evolve the franchise and put his own mark on it, so I'm excited to see what we'll get, even if I will miss using buttons all the time. Perhaps we'll reach a stage where controller buttons are merely used as fashion accessories for post-button rebels and in the memories of old people, freaking children out with tales of a time when thumbs ruled the roost. Food for thought.
Aonuma: Future Zelda games will use Skyward Sword-style controls [Official Nintendo Magazine]