When asked if the ambitious Xbox 360 and PC stealth title was exclusive in the really real sense, producer Alex Parizeau simply stated, "It's exclusive," and admitted that it was a business arrangement with Microsoft. Prodding about timed exclusivity (a la BioShock and Fallout 3 DLC) didn't yield anything less enigmatic, so we turned to lead game designer Steve Masters. "As far as I know," he said, "this is completely exclusive."
Aha! Complete exclusive confirmed!
"But that may change in the future."
Oh. We suspect the game may make its way to PS3 eventually, but for now ... Wellllll ...