Soundwave on 19 November 2013
http://www.youtube.com/watch?v=ifa9Q7ATfVA
Here's another shorter Wired video.
In the future I think these types of features will be standard on all game consoles and it will change the television experience in general too.
For anyone that watches live sports for example (which is about 80% of the global population) ... this can change that experience also.
The remote control will pretty much go away IMO, it's also probably what Apple is working on (ironically buying the maker of the first Kinect), but they have been slow on the draw. Looks like Microsoft beat them to it for once.
