Google has started rolling out new features and bug fixes to the Pixel 6 and Pixel 6 Pro as part of its December 2021 updates. The Pixel Feature Drop is available now as an OTA or a factory image for both devices.
https://www.notebookcheck.net/Google-Pixel-6-and-Pixel-6-Pro-receive-new-features-and-bug-fixes-with-new-updates.585134.0.html