The Linux Kernel 5.3 will have HDR support for some Intel chips:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=417f2544f48c19f5958790658c4aa30b0986647f
ToDo:
- Wayland support for HDR
- Toolkit support for HDR
- Application support for HDR