Eidos and NVIDIA announce the PhysX support for the PC version of Batman: Arkham Asylum which will cause a delay in releasing the game. New release dates will be September 15 in North America and September 18 in Europe. The console version should not suffer any delay, the release dates remaining the same: August 25th in North America and August 28th in Europe and Australia. Word on PhysX support:

"Hardware accelerated by supported NVIDIA GeForce GPUs, PhysX technology provides an even deeper level of engagement for players of Batman: Arkham Asylum by utilizing the processing power of the NVIDIA GPU to render stunning in-game physics objects in the environment that not only add to the overall look of the game, but create an immersive and believable world."