LG has been showing off the first example of wireless UltraHD steaming at Mobile World Congress: it can take videos from a phone, playing at 1080p, upscale it on the fly, and show it off at 4K on a TV.
The technology uses Wi-Fi and Miracast to manage that, essentially mirroring phone content on a big screen, be it video, games or whatever. According to The Verge in the video below, the streaming is pretty smooth, with only extreme panning causing frame rates to drop.
It's only early days for this kind of streaming, but this already looks pretty damn promising. [The Verge]