Some 2019 TVs are supporting it,
Figured that means it will be wide spread by 2020 tv launch,
Now I know it’s for 8k but it also says in reviews it supports the new HDR10 + and fairly sure Dolby Vision will have something in the pipe line as well,
I have already switched everything over to hdmi 2.1 via monoprice just to future proof everything, not that it’s helping anything cause I have a 2016 flag ship Samsung TV and a 2018 hdmi 2.0 receiver,
But regardless it’s nice to be future proofed anyway, as I plan to buy a LG oled in 2020.