Software upgrades would allow media to be streamed to any smart device, so a user could start playing a game or movie on a TV, move it to a tablet or phone, and then continue playing. A mentioned DVR feature would also allow live TV to be recorded and streamed in the same manner,

Windows 8 variant based,

Kinect would logically get an update to improve the voice recognition plus a HD camera on the device. An improved tracking system and dedicated processing just for the Kinect would actually allow for four players to use the Kinect simultaneously, 

There's also a possibility that we may see some force feedback-enabled peripherals like a steering wheel,

Possible release date in late 2013, a price tag of US$299, and even augmented reality glasses with 4G connectivity,

The US lawyers had the document removed from the Website it was published on.  The above all seem sensible and viable so we look forward to seeing the results. 

So how is HDMI 1.4 output possible on older consoles? It turns out that the new standard is rather conservative. A 1280x1470 framebuffer actually requires less bandwidth than native 1080p - and both Xbox 360 and PlayStation 3 have supported that for ages. Even 3D Blu-Ray movies only run at with the equivalent bandwidth of 1080p at 48 frames per second - well below the 1920x1200/60Hz max of the interface. So HDMI 1.4 support on an HDMI 1.2 console boils down to making the hardware output a custom resolution and nothing more.

In terms of Arkham City itself, the game uses the same TriOviz technology as Gears of War 3 - though the Epic title was restricted to the half-res side-by-side functionality we've seen on other 360 stereo 3D games. Curiously though, while both games seem to be operating at native 720p on both platforms - as we would expect - the Xbox 360 version seems to have a one pixel wide blur across the whole image.

From EuroGamer