[Update: One UI stable update is now available for non-beta users in India. The size is 1756.16 MB.]
Samsung is now expanding One UI/Android 9.0 Pie rollout to the Galaxy S9/S9+ in more countries. Samsung is now rolling out the stable version of its One UI (Android 9.0 Pie) to the Galaxy S9 and S9+ beta users in India. It also brings the January 2019 security patch.
The software version of this update is G960FXXU2CRLO and G965FXXU2CRLO for the Galaxy S9 and Galaxy S9+ respectively. The size of the update is 166.27 MB.
You can check for the update by heading into the Settings > Software update > Download updates manually.
Thanks, Sesha Sai!