After having announced yesterday that Valve would have shown a new demo of Portal 2 during gamescom, now comes a brand new movie, probably the same demonstration, in which the player faces new mazes and puzzles totally different from what we saw in first Portal, a new ambience and a far superior graphics to the 'obsolete Source Engine. In the middle of the movie we see some level shown at E3 and at the end we see a new trailer of the game. Valve has also finally announced the release date for Portal 2, which arrives in stores February 9, 2011. GLaDOS does nothing but wait!

Portal 2 - New trailer demonstration + | HD version