Well I'm super pumped for GH4 on the Wii. Not only will it be the first ever wii game to have DLC (confirmed) but it will also be the first GH to have drums =D. Now, I know all your RB fans are out there saying BOOOOOO RB MADE DRUMS FIRST!!!!! But apparently, the drums idea came from a former Guitar Hero coder, they were thinking about the idea for GH2 but never got around to putting it in. That's just what I heard.
It will have the most songs ever on release date that aren't DLC, that being something like 95, while RB has around 80, yes I do know that you get like 30 more free ones, but I'm talking about on the CD.
For all of you GH fans who don't know the date yet, it's set to be released 10/28/08, which means, I better get to Game Stop and pre-order it soon.