MotionPlus has already been confirmed for Zelda Wii, but Aonuma recently hinted that how you kill off enemies could end up solving puzzles. What this means we can only guess. You might be able to kill enemies a certain way in order for them to drop items, or maybe you have to strike push enemies backwards into pits by hitting them in the right direction.
Aonuma also said that he’s pushing hard to get a demo ready for E3 and eventually release the game by 2010. Apparently he did that with Spirit Tracks which he had previously wanted to be released by Spring 2010. Some fans will be worried that this will result in Zelda Wii being less polished than it would’ve been due to the rushed release, but if Spirit Tracks is any indication, it will be just fine.