Based on what we know, Zelda Wii is going to implement Wii Motion Plus, which will feel like your swining Link's sword, although after awhile, i'd imagine swining the wii-mote would get tiring, so good and bad from there.
There is also other things, from a few interviews, we can piece together that Miyamoto wants to go away from the usual Zelda Formula for a suprise, this can be a good or bad thing, and it can also be interperated as brining more action outside of dungeons, sort of like
TP, how things happened inbetween dungeons, rather than older games where there wasn't much inbetween, which can be good or bad also.
Another thing to point out is Miyamoto wanting to make Zelda Wii graphically beautifaul, which of course will be good.
I'm expecting good things from this game honestly, i'm not expecting it to be the best, but there is potential, but the fact that it's likely to be easy since Nintendo wants to make the game more accesible, brings my expectations down for an amazing challenging adventure.