Happy New Year! It's 2019 already for the Galaxy Note 9 users. Samsung is now rolling third One UI beta update to the Galaxy Note 9 users that fixes several bugs and bring features improvements. It comes with the January 2019 security patch.
The update is currently rolling out with build version N960FXXU2ZRLR, while the size of the update is 331.81 MB.
If you have installed the beta build on your Galaxy Note 9, you can check for the update manually by heading into the Settings > Software updates > Download updates manually. This will allow the software to update and load the beta version.