One of the reasons I mentioned the snowy scenes in The Hateful Eight, easier to do and with high quality on film.Thing is, folks have been exposed to HDR movies for awhile - via film and a very bright lighted projector . If you could use one of the theater projectors and project it on a much smaller screen - one would be seeing some very HDR and high resolution imaging that would blow anything currently on the digital market away.
I am thinking more about the push by Dolby with Dolby Vision (or the very recent solution from YMagis), it has the best chance of adoption in the movie-cinema industry going by their track record; although WTH is Magic Mike XXL doing with this tech I have no idea
I suppose separate to that is the HDRx from Red *shrug*.
Cheers