Batman: Return to Arkham was supposed to be coming out later this month until it got delayed. Now the release date is likely to be in November.
Eurogamer has been told by multiple sources that a November release date is now being targeted. They mention that if a November date is missed, it could come out early next year instead.
Eurogamer contacted Warner Bros. for more information, but they didn’t provide anything substantial. All they said is that a release date has yet to be announced and more time was needed to polish up the game to a high standard.