On the Galaxy Tab S9 Book Cover Keyboard specifications page, Samsung had detailed that the AI Key feature of the Galaxy Tab S10 series will be available in the Tab S9 FE+ with One UI 7. AI Key feature is only supported with selected Samsung keyboards (separately sold).
Galaxy Tab S9 FE+ new update details
Samsung is now distributing a new OTA update for its Galaxy Tab S9 FE+ in the US; more specifically, the update is spotted on carrier-locked units of the device. The feature availability with this new update is mentioned in the changelog given by the Verizon carrier on their official software update page of the Galaxy Tab S9 FE.
Galaxy Tab S9 FE+ users are getting this update with build version X518USQU8BXL7. The update is also available on some other networks as well; the remaining should get it soon. To check the update available, go to the Settings menu, then tap on the Software update option, and finally tap on the Download and install option.
The update does not carry a new security patch; the device is still on the December 2024 Android security patch. However, it seems that One UI 7 for these tablets may be late; that’s why they rolled out these features on One UI 6.1.1 running on the Tab S9 FE.