Here's a shorty little video that Activistion released today showing off the major features of
Guitar Hero 5. While the setlist and bands are debatable the game is getting two big new features with the ability to drop in and out of a song any time you want and that you can now play with up to any of the same four instruments at one time (although four mics seems a bit ridiculous). The game does have a pretty impressive
setlist already so hopefully the final product is solid.