Activision has announced a Guitar Hero III: Legends of Rock weekend and game demo release beginning Friday, November 2nd.

From the press release:
‘…fans 13 years old or older will be able to participate in a number of exciting activities online including a 72-hour Play & Win Sweepstakes where every hour winning axe shredders who register and play are awarded with special prize packages, such as a limited edition guitar faceplate signed by Slash, as they battle in a multiplayer showdown against the developers of Guitar Hero III: Legends of Rock, as well as an exclusive Xbox LIVE leaderboard tournament to crown the top Guitar Hero player.’