The OnePlus 8T started receiving a new new OxygenOS version on December 29, but some reported that video playback would pause mysteriously after the update. A new version is rolling out now with a hotfix for this issue. India is the first to get the new firmware, which has a version number 11.0.6.8. North America and Europe will get it soon as well (note: the European version is is 11.0.6.9). Hotfix aside, the rest of the changelog is the same as the version from the end of December. Even the Security Patch stays on November 2020. Changelog System ...
Source: https://www.gsmarena.com/oneplus_8t_gets_hotfix_for_the_video_playback_issue_from_the_previous_update-news-47083.php