The game will be set in DC's Silver Age, and focus on the Caped Crusader's first meeting with the Joker, reports Variety.
The "highly stylised" release will also introduce other Justice League heroes such as Superman and Wonder Woman.
Yet to be confirmed by Rocksteady or Warner Bros Interactive, it will likely appear in 2014, after next year's DC fighting game Injustice: Gods Among Us.
Developed by NetherRealm Studios, Injustice is said to have a deep, original story, taking place in "a world where the lines between good and evil are blurred".
Fighters will be split into two categories, between "gadget" characters like Batman and "power" characters like Superman.
Rocksteady, meanwhile, is currently focusing on Arkham City - Game of the Year Edition and the Wii U exclusive Armoured Edition.
The Game of the Year Edition features all previous downloadable content, including the 'Catwoman Pack', 'Nightwing Bundle Pack', 'Robin Bundle Pack', 'Challenge Map Pack', 'Arkham City Skins Pack' and 'Harley Quinn's Revenge'.
Batman: Arkham City shipped more than 4.6 million copies during its first week on sale, and won the award for 'Best Action' game at this year's BAFTAs.
Batman: Arkham City - Game of the Year Edition will be released on September 7.
> Feature: 'Batman: Arkham City' - How the Dark Knight went open-world
> Read our review of 'Batman: Arkham City'
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