A British game magazine has details of Microsoft's highly anticipated Project Natal accessory for the Xbox, leaked apparently by British game developers and studios who were briefed by the company.

They passed on that Microsoft plans to release the motion-sensing input device and Xbox controller in November 2010, with an initial shipment of 5 million units. There will be 14 games available at launch, and Microsoft is pricing it as an impulse buy in the range of $50 to $80.

The report said the price will be under 50 pounds, or $82, and as low as 30 pounds, or $50.

Either way it's amazingly cheap for a device that recognizes and tracks voices, skeletons and gestures with depth-sensing imagery.

An excerpt:

This is probably a preview of what Steve Ballmer and Robbie Bach will disclose at the Consumer Electronics Show in January.

I'll bet the 14 Natal games will trickle out starting in January, on through the E3 game conference next summer. Likely blockbusters on the card include Bungie's "Halo Reach," sports games from EA and perhaps "Guitar Hero 6."

A Microsoft spokesman gave the usual statement: "We cannot comment on rumors and speculation."