Rock Band M.I.C. Rendering - Final Rendering for concept approval.
Rock Band 2 M.I.C. on IGN - http://gear.ign.com/articles/892/892112p1.html
"First and foremost, MadCatz will be producing a premium microphone controller that will retail for $50. The microphone allows Rock Band 2 vocalists to seamlessly control microphone settings and other in-game controls without having to reach for their standard game controller." - IGN
Rock Band M.I.C. Microphone with Intergrated Controller - http://www.gamestop.com/Catalog/ProductDetails.aspx?product_id=72337