After nearly a week of teasing something, it looks like that something (or one part of it at least) is Portal 2. GameInformer has revealed the cover for it’s forthcoming issue and it’s showcasing Valve’s Portal 2.  Once the issue goes on sale im sure plot details and gameplay mechanics will be revealed. Valve’s Doug Lombardi has confirmed the game is in development for Xbox 360 and PC. I’m sorry PS3 owners, not Portal 2 for you! Don’t even pretend for a second your suprised! Expect a Holiday 2010 release. Here’s a description of the game from Gamestop.com:

“Coming this holiday. Portal 2 is the sequel to 2007′s Game of the Year and draws from the award-winning formula of innovative game play, story, and music that earned the original over 70 industry accolades. Features single and multiplayer co-op modes. The single-player portion of Portal 2 introduces a cast of dynamic new characters, a host of fresh puzzle elements, and a much larger set of devious test chambers. Players will explore never-before-seen areas of the Aperture Science Labs and be reunited with GLaDOS, the occasionally murderous computer companion who guided them through the original game. The game’s two-player cooperative mode features its own entirely separate campaign with a unique story, test chambers, and two new player characters. This new mode forces players to reconsider everything they thought they knew about portals. Success will require them to not just act cooperatively, but to think cooperatively.”