https://wccftech.com/dolby-vision-gaming-is-now-available-on-xbox-series-x-s/

Starting today, Dolby Vision-enabled TVs will be able to have full-spectrum visuals with the rollout of Dolby Vision gaming on Xbox Series X|S. This is the latest in Microsoft's and Dolby's partnership which will extend Dolby support beyond the previously implemented Dolby Atmos. According to the latest blog post by Xbox Senior Progam Manager Katie Slattery:

At Xbox, we want to give gamers the best gaming experience at full audio and visual fidelity. That is why we partnered with Dolby to bring immersive spatial audio to our platform with Dolby Atmos in 2017, and ultra-vivid picture quality for movies and streaming with Dolby Vision in 2018. Then in 2020 with Xbox Series X|S, we launched the first consoles ever to support gaming in Dolby Atmos and with the future capability to support Dolby Vision.