You're not going to see a wholesale switch over to all 4K by 2K. It will start with one, two, three, four channels, just like high definition (HD) when it was first introduced.

Older generations of Wi-Fi weren't quite robust enough to deliver video in the home without breaking up and losing packets and so forth. 5G Wi-Fi gives you extended reach, extended data rates, and more robust coverage.

In the 2015 time frame, you'll probably see more mainstream adoption of set-top box technology using UltraHD. We'll start shipping it in 2014, but the volume will take off in probably 2015.

Henry Samueli Quotes