Why wait until September 17 to play Brütal Legend when you can do so a little in advance? As we guessed earlier, one of the pre-order bonuses for the rocktacular game will indeed be a chance to get the demo early -- reserve your copy at GameStop in-store, and you'll get a redeemable code as early as September 11.
Oh, and in case you forgot, pre-ordering will also net you a slick Tenacious D guitar for use in multiplayer. I was already sold on Brütal Legend before today, but the creature designs and album cover-inspired worlds shown during the EA gamescom conference really stood out. I need this game!