Xiaomi has updated its line of smart TVs today (August 10, 2021) with new OLED-enabled models. This comes with an ultra-high contrast ratio, HDR10+ and "True 10-bit" color on the new 6-series. For those in need of even more premium specs, the new Mi TV OLED 77 model has Harman Kardon-tuned speakers, high-wattage speakers and a new spec in common with the Mi Mix 4.
https://www.notebookcheck.net/Xiaomi-unveils-new-OLED-versions-of-its-premium-and-6-series-smart-TVs.554508.0.html