I just looked for a release date, and as far as I can see, it's still just a rumor. If its just a rumor at this stage, I think we can pretty much forget about a release of Rockband on the Wii this year, or ever for that matter. Remember the rumors of downloadable content on the Wii for GH3? Remember the rumors of colors? Pricedrops? You see what I am saying. In searching, I found that they have a PS2 version ....WTF! They could have done a port from the PS2 easily at bare minimum. I think if this was a problem with Nintendo that EA would have thrown them under the bus already. They may have been waiting to see how well GH3 did on the Wii to test to see if Rockband would have been viable. Evidently they weren't thrilled about what they saw so they probably don't see a huge market for it. Very disappointing.
Rock Band on Wii
Harmonix CEO says "Absolutely."
April 2, 2007 - During a conference call to announce its latest music game Rock Band for release on Xbox 360 and PS3, Harmonix CEO Alex Rigopulos hinted strongly that a Wii-specific version of the title would be coming out in the future. When asked if there was any chance Rock Band would arrive on Wii, Rigopulos said without hesitation, "Absolutely."
"We will, at some time, bring Rock Band to every [important] platform," Rigopulos said. He added that Harmonix would optimize future versions of Rock Band to fit the strengths of the platform. "I think the Wiimote is something that holds enormous promise."
Rock Band comes to Xbox 360 and PS3 this holiday. No Wii version has been officially announced.