Microsoft has remained oddly silent about its next Xbox console, codenamed Durango. However, an apparent leak of the system SDK reveals some new tidbits about Redmond's next-gen effort.

Documentation posted by VGLeaks reiterates the Kinect requirement we heard about months ago. "Every Durango console will be sold with a new high-fidelity Kinect Sensor, which will be required for the system to operate," the help file says.

Read more: Next Xbox to include Blu-ray, hard drive »

As gamers prepare for their likely first glimpse of the next generation tomorrow, at least one executive is tempering expectations. Crytek CEO Cevat Yerli says it is "impossible" for the next-generation consoles to match high-end gaming PCs.

Read more: 'Impossible' to package $2000 worth of tech into a console »