Portal 2 in advance on Steam?

A countdown on the official website of Aperture Science, fictional company of Portal 2, will expire in the next few hours. "When the countodown will end there will be a" final test ". What is it? What Valve is thinking ahead to launch its digital service on the Portal 2, Steam? Portal 2 will debut April 21 on PC, PlayStation 3 and Xbox 360 .

• Help Portal 2 Get Released Early (15/04/2011)
• Pre-Load Portal 2! (12/04/2011)
• Portal 2 Pre-Load? (12/04/2011)
• Portal 2 will release early with enough indie game love (Portal 2) (15/04/2011)
• Portal 2′s PS3/Steam functionality (14/04/2011)

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