Don't expect an official Guitar Hero IV announcement from Activision or Red Octane for a while. We're pretty sure Perry spoke out of turn -- but that's rock n' roll. We know that the plan is to have a Guitar Hero every year, but we don't think they're going to announce GHIV before GHIII is out the the door. Before the band geeks start freaking out, the game is sure to have more than just Aerosmith. We just expect this dedication means plenty of master tracks from Aerosmith -- they better be master tracks!