I don't know why you guys are hatin' so bad, I mean at worst case it's another fun rhythm game to play fake guitar to. If they add support for drums and vocals, and through some act of Shaak-Ti the Rock Band stuff is compatible, then it would be very very cool. That seems like wishful thinking on my part though so I'll shut up.
But seriously, as lame as it is I'm still going to rent GH: Aerosmith just because it's some new colored dots to destroy in button-mashing zen, so whatever comes after that couldn't be any worse right?
And if they do create a keytar peripheral like they've been threatening, it's game over man. Game over. I will take over the world with a keytar. Just think of the possibilities!!