8K is the next up-and-coming thing in display-tech standards. However, devices that support it may only be so effective at showing it without compatible, high-quality cables. The company Austere has put just such a product on the market.
https://www.notebookcheck.net/Austere-releases-an-HDMI-2-1-cable-for-8K-UHD-content.451266.0.html
"8K UHD" ugh you'd expect a tech site to know that UHD is 4k.