But one of these---4K streaming support on the web---is now rolling out. Until now, 4K gaming with Stadia had only been available by using a Chromecast Ultra with a television.

Programs with 4K support will feature a 4K icon in the YouTube TV interface. You can find a full selection of 4K content by searching for "4K" in the YouTube TV app.

The Roku Express 4K+ is the company's latest way to stream shows and movies in 4K and HDR on a budget. The device will arrive in mid-May both online and at major retailers for $40. The new player ...