Worth noting that it is physically impossible for current flat panel displays to have full coverage of rec.2020, because the spectral width of each primary is too wide with current flat display tech (LED, LCD, etc.)
Full rec.2020 coverage requires the use of lasers, so you can get a ~spectrally pure primary.
My prediction is that the next big move in display tech after 8K will be a transition from LCD/LED to VCSELs or some other teeny laser pixel, so they can advertise full rec.2020 coverage.
After that, maybe tunable quantum dot lasers so they can get full CIE 1931 coverage, but that's probably at least 15-20 years away.