Ready to turn your totally sweet keytar into a totally sweet game controller? Mad Catz announced that the PS3 and Wii versions of the Rock Band 3 MIDI Pro Adapter, which allow use of MIDI keyboards, drum kits, and, eventually, the Rock Band 3 Squier Stratocaster, are headed to retail now. The Xbox 360 version, according to the announcement, is expected to ship "imminently" in limited quantities, to Best Buy stores.

However, Amazon still shows the release date for all three versions as December 26, and Best Buy shows only the PS3 version in stock. We've asked Mad Catz to help clear it all up for us, but it's likely most of you won't need one of these until the March release of the Stratocaster controller anyway.