The latest Steam survey shows us barely 34.02 percent of gamers have a Full HD screen and over 55 percent are gaming on an even lower resolution. 4K screens have barely captured any marketshare but that doesn't stop Microsoft from futureproofing Windows 10 by giving the OS support for video resolutions of up to 8K. The actual switch to 8K is still far into the future though and we doubt it will become commonplace during Windows 10's lifetime.
As PC World points out, 8K computer screens are likely still many years ago but we may see some TVs for the 2020 Olympics:
All major TV makers have shown prototype 8K displays. Japan’s NHK is testing 8K broadcasts in time for the 2020 Olympics, which will be held in Tokyo.
8K displays will show images at a 7680 x 4320 resolution. Support for 8K will be built in to Windows 10 for PCs, and 8K monitors will need to be attached to display ports. PC makers may also come out with 8K all-in-ones in the future.
TV makers have already proposed a new SuperMHL connector for 8K video, and the Video Electronics Standards Association (VESA) has proposed the Embedded DisplayPort (eDP) 1.4a standard to support 8K in laptops, mobile devices and PCs.