Rock Band 2 announced, heading to Wii later this year

“Microsoft has been a great partner throughout the launch of Rock Band in the last year and their continued support is instrumental in supporting the more advanced features and cross title compatibility we will have in Rock Band 2. Of course, our goal is to make Rock Band 2 accessible to all and we look forward to bringing Rock Band 2 to all relevant platforms later this year.” – Harmonix representative

Rock Band 2  is supposed to be releasing for the Xbox 360 this September with the Wii/other versions hitting later this year. Still, the release of the original Rock Band for Wii seems a bit superfluous, since most can wait out the extra few months for an improved experience.

Source 1, Source 2