I think you mean h.265
Good news is that 10bit HEVC has just been confirmed for the UHDTV standard (aka consumer level 4K). The increase to 10bit is great news for contrast and colour and reduced banding artefacts etc. This is required for the Rec. 2020 colour space.
So h.265, 10bit, UHD 3840x2160, Rec. 2020 all adds up to a beautiful way to watch quality content.
The European standards group also said that contrast would be drastically improved by increasing the number of bits per pixel to 10 bit. Level 5.1 of the HEVC Main 10 profile is specified for UHD content for resolutions up to 2160p. - See more at: http://www.tvtechnology.com/article/dvb-confirms-specs-for-uhdtv-and-ott-in-europe/271256#sthash.vkQeGbZk.dpuf