Last week rumors went around that Def Leppard would be featured on RedOctane/Activision's upcoming Guitar Hero IV, info extracted from an on-air Rockline radio interview. Said radio station has now put up a soundbite on its website where Def Leppard guitarist Phil Collen confirms that Photograph, Animal, and Rock of Ages will be featured on the rhythm game's next installment saying "No, it is coming out, it would have been out earlier, but we didn't get around to it."