Valve has reportedly said Portal 2 will be released on Wednesday, 9th February 2011. The game is in development for PC, PS3 and Xbox 360.
Confirmation comes from gamescom, where CVG also heard that The Office co-creator Stephen Merchant will lend his vocals to the game. He'll bring the Buddy Sphere to life.
Portal 2 made waves at E3 when Valve boss Gabe Newell confirmed the game for PS3. He thanked Sony for not "repeatedly punching [him] in the face" because of his past comments about the console.