https://www.techradar.com/news/dolby-vision-hdr-streaming-will-soon-arrive-on-xbox-one

Though the Xbox One S and Xbox One X have supported the HDR10 format since their respective launches, the slightly more advanced Dolby Vision format has remained unsupported on all games consoles to date.

However, that's about to change, with an announcement on Xbox Wire revealing that Microsoft's 4K-capable consoles are set to receive an update that will enable Dolby Vision streaming, allowing users to watch Netflix in the 12-bit high-dynamic-range format.