Valve has released a HD version of the Portal 2 Wheatley footage that introduces Stephen Merchant as Wheatley. In addition to introducing Merchant, the footage gives a deeper look into Aperture Science and shows off some of the new rendering effects in the game. Portal 2 is set to be available on February 9th, 2011, for PC, Mac, Xbox 360 and PS3 - five
screenshots found their way in our gallery.