Here's some news that's sure to strike a sour chord with the legions of Guitar Hero III owners worldwide. We've confirmed with Activision that Guitar Hero: Aerosmith will not allow users to access content for GH3.
It will also be impossible for those who've purchased only Guitar Hero: Aerosmith to access and download tracks currently available for GH3. For those with both games: prepare for disc-swapping. The carry-over of DLC into Guitar Hero: Aerosmith seemed like a real no-brainer; hopefully Neversoft will take Guitar Hero fans' previous purchases into account while nailing down Guitar Hero World Tour and Guitar Hero: Metallica's feature sets.