Either someone got their facts wrong or Guitar Hero IV will be dedicated to Aerosmith.

Billboard.com reports: "Besides the album, Aerosmith is also working closely with the makers of Guitar Hero IV, which will be dedicated to the Boston group's music. 'I don't know much about the technical part of it,' Perry says, 'but artistically we're working hand in hand.'"

So, if you take Billboard at their word, you have to expect the next Guitar Hero to be a veritable greatest hits of Aerosmith... we wouldn't put our money on it, though. We find it much, much more likely that Perry and Billboard weren't fully aware of what they were talking about; after all, Perry is a bona fide rockstar. Why should he 'know the technical part' of some dumb videogame? So we seriously doubt this is true. Aerosmith are okay and all, if you like that sort of thing, but a full game of Aerosmith? Not gonna happen.

This is pure speculation, but we could totally see a downloadable Aerosmith content pack coming for Guitar Hero 3. That sounds more likely, and may have been what Perry was talking about. 

Trivia note: The only good game based on a band we can think of is arcade classic Journey: Escape. (And, in truth, it wasn't that good of a game.)

Gamespot.com: Aerosmith headlining Guitar Hero IV?