HDR + Kernel 5.3

I saw some work was done on kernel 5.3 toward supporting hdr on intel and amd for Linux. Wondering where NVidia stand nowadays on the topic. Saw the 2016 talk and the XORG proposal and nothing since 2017/2018. If I understand there will be HalfFloat (FP16) float support on the kernel (Looks like a good first step to me). What about HDMI Metadata or infoframe? I am pretty noob on the subject just checking in since not a lot of recent info on the subject from NVidia. Can we hope something for ubuntu 20LTS? Thanks!