With Nokia Device Hub Beta, connect to and access your devices easily. Many wireless headsets, Internet capable Smart TVs, Blu-Ray Players and Computers are supported. Nokia Device Hub also recommends Windows Phone applications which work with your devices. Pin a device to the home screen to get easy access to all the apps which work with it.
It was added to Lumia devices via apps updates back in June and comes pre-installed on devices running Lumia Cyan out of the box.