Bad news for Batman fans: no Arkham Asylum for you till Q4 2009, according to co-publishers Eidos and Warner Bros. The delay was confirmed following a round of rumors – once expected next month, the stealth-action title is now expected “at the end of summer”. This means a release sometime before the end of September.

“This additional time will allow us to ensure Batman: Arkham Asylum is of the highest quality for gamers,” explained Warner and Eidos.

The game is due out on PC, PS3 and Xbox 360 and is being developed at Rocksteady.