It hasn't been officially announced, and we've read reports to the contrary, but let us assure you: Rock Band guitar peripherals work perfectly with Activision's Guitar Hero: Aerosmith. We know because we just got finished playing it. The whammy-bar works. The "Star Power" works. It's all good. This is for the 360 version. We haven't tried it on the PlayStation 3 yet.

Whether this signals that Guitar Hero is loosening the reigns on future releases remains to be seen, but we wouldn't be surprised if Guitar Hero World Tour supports Rock Band (and Rock Band 2) instruments.

More photographic proof of this music-game periph-mixing is under the cut.

(here's G4's Ty Colfax plugging in his Rock Band Axe.)

(...then rockin' the hell out.)

(yes, it works in 2-player mode. BTW: I crushed Colfax, and was later schooled by M. D'Alonzo.)