No news on that at the moment, and arguably 4K2K is of less advantage on smaller screens. It's also easier to do more pixels on bigger screens - more screen area to cram the pixels in, so they don't need to be so small!
At the moment 4K2K screens, and indeed 8K devices, are a technology demonstration rather than a commercial reality. Broadcasters including the BBC and Japan's NHK are doing work on these Super HD or Super Hi-Vision formats, but as yet there's no information on if or when they will happen.
After all, 4K2K needs four times as much data as current 1080p systems, and broadcasters - both here and in Japan - are still using 1080i as a maximum, due to limited broadcast bandwidth.
So I think it'll be a good while before it becomes commonplace.