Samsung has started distributing One UI 3.1 to the Galaxy Tab S6 Lite. The Android 11-based update introduces several features to the mid-range tablet, including Samsung DeX.
https://www.notebookcheck.net/Samsung-Galaxy-Tab-S6-Lite-nets-One-UI-3-1-and-Android-11-update-with-DeX-support.527592.0.html