EA has revealed, during their showcase in Tokyo, that a demo for Valve's zombie apocalypse shooter Left 4 Dead 2 will be released for Xbox 360 and PC on October 27. The actual release of the game is on November 11, which will give players ample time to play the demo and complain about how Valve left the first game to rot. Which makes this a good time to tell you that the first Left 4 Dead gets its new downloadable level Crash Course on September 29. So many zombies to put on fire, so little time...