Update: EA has confirmed to Eurogamer that Rock Band 3 will be released on 29th October in the UK.
Original story: Rock Band 3 will ship simultaneously worldwide on Tuesday, 26th October, MTV and Harmonix have announced.
GameStop, Amazon and Wal-Mart are signed-up as the American retail pre-order partners. GameStop's got three downloadable songs to entice your loyalty, Amazon's got an in-game guitar and a $10 voucher and Wal-Mart's just got a $10 voucher.
The most eye-catching new feature of Rock Band 3 is the keyboard peripheral. Rock Band 3 has a Pro mode, too, that uses the six-stringed guitars to actually teach you to play the instrument.
Plus, bands can now be seven people strong, and there's a new goal-based story career story with drop-in, drop-out gameplay.
Rock Band 3 is in development for DS, PS3, Wii and Xbox 360.