Despite gamers' hopes that a new installment of Harmonix's "Rock Band" video game franchise was forthcoming, the company will not be releasing the fourth title in the series this year.  Chris Rigopulos, who serves as VP of strategy and business for Harmonix, told Game Informer magazine that the company will instead be focusing on new downloadable content fro "Rock Band 3," including new tracks from Ozzy Osbourne, Lady Gaga, the Foo Fighters, and a 13-minute-long live version of Peter Frampton's "Do You Feel Like We Do" from his 1976 album, "Frampton Comes Alive," all of which Rigopulos says will be available before the end of May.