Kim Swift from Valve announced the release date of the demo of their upcoming zombie shooter Left 4 Dead 2 at their pre-Tokyo Game Show event; it’ll be out on 27th October.

Joystiq, who reported this news, also brought word that the original game will be receiving DLC, entitled Crash Course on 29th September.

Left 4 Dead 2 will be fully released on 17th November on PC and Xbox 360, do keep checking back at our game hub for more as it comes.