All new TVs are actually "marketed" with the HDR term. No clue really what he's writing about (Rec.2020, ST.2084, highlights...) and I don't think that the user base is already grading "HDR" at the time of writing this. Still found this interesting to share:
http://vanhurkman.com/wordpress/?p=3548
Wonder if it's just a new way of saying "dynamic contrast" (one of the worst inventions ever for LCDs).
If you want a better insight into HDR SGO made some good introductory videos but unless you're grading for HDR on a HDR compliant monitor it will not be of any practical use to you. It is worth understanding the concept though :)
https://vimeo.com/184542836 (https://vimeo.com/184542836)
https://vimeo.com/197910909 (https://vimeo.com/197910909)
https://vimeo.com/200670359 (https://vimeo.com/200670359)
There are a few more on their Vimeo page https://vimeo.com/user45728073/videos (https://vimeo.com/user45728073/videos)
https://pro.sony.com/bbsccms/assets/files/cat/mondisp/articles/HDR_X300_explained.pdf
Hmm, looks like that link is borked, this one works. https://community.sony.com/t5/F5-F55/High-Dynamic-Range-Explained-and-the-new-X300-OLED-monitor/td-p/492320