The update is rolling out for the 5G version of the international model designation SM-T736B of the Samsung Galaxy Tab S7 FE. It is currently being seeded in Europe with firmware version T736BXXU2CWC5 and the February 2023 Android security patch.
Samsung Galaxy Tab S7 FE
The One UI 5.1 update for the Samsung Galaxy Tab A8 10.5, on the other hand, is rolling out for the SM-X200 model in South Korea, but the rollout should soon expand to other regions. The update has firmware version X200XXU2CWC1 and comes with the January 2023 Android security patch.
If you have not yet received One UI 5.1 on your Galaxy Tab S7 FE or Galaxy Tab A8 10.5, you can manually check for the update by going to the tablet app Institutions > Software update menu.