Well it's called Zelda:Twilight Princess. It will be released for both the Nintendo Wii and the Nintendo Gamecube. Yes you can battle while on Epona, but that's only the begining. The Wii version will utalize the unique controller, and it will surely create a Zelda experience like no other.
Without a doubt. I haven't been in the Nintendo Zelda world ever since the let down of The Windwaker. And, isn't it a "new" Link as was the W.W.? I know it is way after the OoT era, and before the WW. I can't wait to play Zelda with the Wii controller. I heard that you can use the Bow, Boomerang, and sword techniques with it.