Engadget - A document passing itself off as an internal Microsoft presentation about the future of Xbox has surfaced, and is stirring internet chatter with its possible hints at the future of the console. Despite turning up online over a month ago and potentially dating back to 2010, a few things mentioned that have since come to fruition -- like SmartGlass -- are earning it more attention. The proposed developments include cloud-based entertainment, native 3D, augmented reality "Fortaleza Glasses," scalable hardware -- all by 2015. If that's too long to wait, however, the time line also indicates we'd be seeing the next generation hardware in 2013 for $299 (more precise and four-player ready Kinect 2 included). The Xbox 720 package described includes such pie-in-the-sky bullet points as Blu-ray and whole-home DVR features all from a low-power always-on box built on a "Yukon" ARM hardware platform.