German ratings board USK has solidified rumours of a Guitar Hero: Van Halen game with a listing on its website.
PS3 and 360 are the platforms mentioned, according to Destructoid.
It's far from the first we've heard about the spin-off. Last month, sources close to Activision told Eurogamer that Guitar Hero Van Halen will be out this August, as will Guitar Hero 5, DJ Hero and Band Hero.
Corroborating that report are a leaked set of presentation slides by a Rock Band developer, whose market release timeline shows that "GH:VH" and "GH:BH" will be out this year. How much of his competitor's strategy he's privy too, however, remains unknown.
Activision refused to comment on rumour and speculation when contacted by Eurogamer this morning.