According to the British trade magazine MCV quoting sources within Microsoft the much hyped peripheral codenamed Project Natal will launch next November. It will be shipped in five million copies initially, and 14 games will be available at launch. The price will also be a nice surprise as it will only cost £50.
These details were supposedly revealed as Microsoft toured some of the big British developers to raise interest in Project Natal. Obviously these details aren't written in stone as a full 12 months remain until Natal is supposedly ready for launch.