According to a Gamespot interview with RedOctane's Kai Huang, not only will Guitar Hero III be hittiing the 360, PS3, Wii and PS2 this fall (and possibly the DS next spring) but will feature downloadable content on all platforms and various styles of guitars, all of which are to be wireless.

KH: We're planning a lot for our new guitars for Guitar Hero III. First of all, the one feature that fans have been asking for the most is that, yes, they're going to be wireless. So now fans can finally rock out in their living room and jump off their couches and do all the crazy rock star stuff that they haven't been able to do in the past. And then, what we're doing with the guitars is there'll be a new shape and there'll be new colours. And what we're also looking at in addition to all those features is creating some more interesting guitars that are higher end, and some of them will be made out of wood, and so they'll actually feel like a real guitar."

Check out Gamespot's interview HERE