Rumor: Microsoft Document Details Xbox 720
The document uncovered a few months ago dates back to 2010, and shows Blu-ray compatibility, augmented reality glasses, a new Kinect, and a 2013 release window. It also shows a $299.99 price point.
The document also references Microsoft's Smart Glass, which was detailed this year at E3. Seeing Smart Glass in the PDF certainly lends some credibility to the document, but that doesn't mean it isn't a fake. Microsoft also could have abandoned the plans detailed here in the two years since it was created.
You can download the full 56 page document by clicking here.