T-Mobile is rolling out a new software update for the Galaxy Note 9, but it is not that big but somehow important. The Galaxy Note 9 is getting the October 2018 security patch, minor bug fixes, and few improvements.
You can identify this update with software version N960USQU1ARJ8.
Meanwhile, Verizon is sending the November security update to the Galaxy Note 9.
If you are still waiting for this update on your device, you can check it manually by heading into Settings > Software Updates or you can simply wait for it.
Let us know if you see any specific improvement in this update.