The first Android 9.0 Pie OTA updates for the Galaxy Note9 were sighted in Germany a week ago but today. However, only users who participated in the beta testing got the stable update. Today, however, UAE users running Oreo are seeing their devices updated.
There are numerous reports from the country citing that devices still running the Oreo version are now receiving stable Android 9.0 Pie along with Samsung's brand new One UI skin on top. This OTA update is about 1.6GB big and the software version is N960FXXU2CSA2.
It's obviously a staged rollout and you might have to wait a few days before it hits your unit as well.
SGN9 Android Pie 9 Poland 06:00 16 01 19