I may be wide of the mark here, but purely from the description, this sounds like Dolby is trying to make Dolby Vision viable as a gaming technology to rival HDR10 and have convinced Sony to join them. I don't think it will in any way be superior for movie/TV watching.
It quite possibly will make their sets permanently incompatible with some DV UHD players that don't have the spare processing capacity for their end. I'd be worried that LG's cheap DV player might not be updated for example. Hopefully, the Oppo does have the spare oomph, but we will see.
LG OLED65E6V, Yamaha RX-A3060 AVR, Oppo UDP-203 UHD Blu-ray player, Apple TV 4K, Sky Q 2TB, Chromecast Ultra
Home-built Ivy Bridge i5-3570K HTPC, 8GB RAM and Nvidia GTX1050 GPU with Plex and Jriver Media Centre,
Ruipro 15M Fiber HDMI cable, B&W FPM speakers, Logitech Harmony Ultimate intelligent remote.