GameStop today have listed a bundle of the first two Arkham games, the bundle is listed for $49.99 and listed for a September 23rd release date. Content follows
Batman: Arkham Asylum
Scarecrow Nightmare, Crime Alley, Totally Insane, and Nocturnal Hunter challenge maps, as well as Trioviz 3D vision.
Batman: Arkham City
Harley Quinn’s Revenge, the Catwoman Pack, the Nightwing Bundle Pack, the Challenge Map Pack and the Arkham City Skins Pack. In total this gives player access to an extra seven maps, three playable characters and 12 skins.