A new trailer of Batman: Arkham City GOTY Edition revealed a new DLC in the works, dubbed "Harley Quinn's Revenge". Slated for May 29, the GOTY (game of the year) Edition package will feature the previously released Catwoman, Nightwing and Robin DLC, as well as the Skin and Challenge map packs, and what the trailer calls "final chapter, Harley Quinn's Revenge." Find its Christian Audigier-esque logo below. Unfortunately, the May 29 release only targets Xbox 360 and PlayStation 3; and the UK edition won't arrive until September 7. Does it take that long to cross the big pond?The GOTY Edition trailer follows.