Left 4 Dead 2 will be out in November, but fans are still wondering whether the sudden sequel will add enough to warrant a purchase. Electronic Arts hopes to answer those questions with a demo, which will be out next month. The demo was announced at the EA's Tokyo Game Show event, which was held earlier today. Details were sparse, but we do know that it will be arriving in late October. Naturally, we'll likely know more closer to the release date, including whether it'll be available on the Xbox 360. For now though, mark down October 27 on your calendars, Left 4 Dead fans. The game itself will be available for Xbox 360 and PC on November 18.