Just in time for Batman: Arkham Origins, the Batman Arkham Bundle collects the first two games with most of the downloadable content packs and garbage that were released.
For Batman: Arkham Asylum, you'll be getting the Game of the Year Edition which includes Trioviz 3D vision, and the four challenge maps: Scarecrow Nightmare, Crime Alley, Totally Insane, and Nocturnal Hunter.
Batman: Arkham City is the Game of the Year Edition version as well, and includes the Harley Quinn Revenge missions, the Catwoman pack, the Nightwing bundle pack, Robin bundle pack, Challenge Map Pack, plus these 12 skins: 1970s Batsuit, Year One Batman, The Dark Knight Returns, Earth One Batman, Batman Beyond Batman, Animated Batman, Sinestro Corps Batman, Long Halloween Catwoman, Animated Catwoman, Animated Robin, Red Robin and Animated Nightwing.
The Batman Arkham Bundle will be out on September 23, 2013 for $49.99 on both the Xbox 360 and PlayStation 3. Reflecting back on games I can't help but think how much Warner Bros. milked the hell out of these releases.
[Thanks, Sharkey 1337!]