HDMI Forum has released the HDMI 2.1 specification. HDMI 2.1 will support data transfer rates of up to 48Gbps, it will support resolutions of up to 10K; however, it can run 8K at 60Hz, or 4K at 120Hz.
The new spec also includes support for Dynamic HDR. In order to fully utilize the HDMI 2.1 spec, you’ll need to replace your existing HDMI cables with an Ultra High Speed HDMI Cable.
See the following article from Neowin:
HDMI 2.1 is finally here, and it has support for 10K resolution
HDMI 2.1 specification has been announced by the HDMI Forum. It will support Dynamic HDR and 8K resolution at 60 frames per second. But to support these features, new 48G HDMI cables are needed which allows bandwidth up to 48Gbps. Refer to the article below from Digit Trends.
Source: Latest version of HDMI comes packing support for 8K resolution and Dynamic HDR
Are expensive HDMI cable with buying? Digital Trends has asked the expert, the short answer is no. In terms of picture quality, there’s no different.
Are expensive HDMI cable worth buying?
HDMI, Display Port, DVI and VGA are 4 display connection technologies that are used for computer monitors and televisions. So which one should you use? In short you should use HDMI
HDMI vs. DisplayPort vs. DVI vs. VGA | Digital Trends.
HDMI 2.0 doesn’t require changes in cables, see the following article from Digital Trends:
HDMI 2.0 Explained
HDMI 2.0 specification has been published, expect higher bandwidth
HDMI 2.0 specification is published