Portal 2 finally has a concrete release date, and EA partners will be publishing the retail versions of the game.  The game will hit store shelves and Steam on April 21, 2011. It will release concurrently across Playstation 3, Xbox 360, Mac and PC.

VP of Marketing at Valve, Doug Lombardi said:

“Portal 2 is Valve’s most innovative title in the company’s history and will be launched with a first-class launch campaign this April, We’re excited to be working with Electronic Arts to deliver this title as we expand our platform strategy to include the Mac and PlayStation 3 platforms.”

All the footage we’ve seen of Portal 2 looks amazing so far, hell, even mind numbingly hard in spots. Throw in co-op action and you have a sequel that’s sure to please.