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
Do you need a headphone amp? How do they work? Let’s find out, check the following article from digitaltrends.com
What’s a headphone amp, and do you really need one? You’d be surprised
Besides HDR10, Dolby Vision and HLG, there is a new High Dynamic Range (HDR) standard coming, it’s called HDR10+. It is backed by the likes of Panasonic, Philips Amazon and 20th Century Fox.
Source: What is HDR10+? – CNET