In the announcement
of the http://www.trueachievements.com/Batman-Arkham-City-xbox....htm
Game Of The Year edition, Rocksteady also officially revealed a long-rumoured piece of story DLC, "Harley Quinn's Revenge". Now, it's also been confirmed that this DLC will be digitally released on the same day as the GOTY edition.
'Harley Quinn's Revenge' the all new DLC story content for Arkham City is available world wide on Xbox 360 and PS3 from May 29th 2012
Rocksteady have also been kind enough to share some concept art with us via Twitter
, entitled 'Why did you have to leave me Mr J?':
The Game of the Year edition of Batman: Arkham City
and the "Harley Quinn's Revenge" DLC are both being released on the 29th of May, with no pricing or achievements confirmed for the DLC.