Cheapest i can find as HMV is back up to £39.99.
Potential 5% cashback from Quidco too.
Release date is this friday (29th Oct)
Rock Band 3 allows players to create and save setlists and share them with friends, both in-game and through RockBand.com. New song filters make it easier to find the types of songs fans want to play and hide the songs they don't, while a built-in song recommendation system will suggest tracks from Rock Band's colossal music library, based on personal fan preference.
In addition to guitar, bass, drums and solo vocals, Rock Band 3 adds three-part vocal harmonies that were introduced with The Beatles: Rock Band and, for the first time ever, a keyboard peripheral to the band. Up to seven players can rock together for the ultimate social gaming experience.
Rock Band 3 empowers players to develop actual musical skills through the fun of fully scalable Rock Band Pro gameplay. Fans can dive in on Easy to try out basic skills and work their way up to Expert for real mastery.
For the casual player, Rock Band 3 has great new party modes that allow fans to get rocking with friends quicker than ever, including party shuffle and persistent drop-in/drop-out and difficulty selection from any gameplay screen.For the serious player, the revamped Career Mode features 700+ goals and rewards and seamless leaderboard integration for an endlessly deep campaign experience. Rock Band 3 also adds a suite of social networking tools to the game so fans can engage friends and fellow rockers over Facebook, Twitter and more. Whether players want to jump in for a quick song or take their band to the top, Rock Band 3 has a mode for everyone.