Realme UI 3.0, based on Android 12, is now available for the Realme 8 5G and Narzo 30 5G, which debuted with Android 11-based Realme UI 2.0 last year.
The firmware version for the Realme UI 3.0 upgrade for the Realme 8 5G is RMX3241 11.C.03, whereas the firmware version for the update for the Narzo 30 5G is RMX3242 11.C.03. Your 8 5G should be running firmware with version RMX3241 11.A.16 and the Narzo 30 5G should be running RMX3242 11.A.16 in order to acquire Realme UI 3.0, though.
The Realme 8 5G and Narzo 30 5G will receive the upgrade, which includes the standard Android 12 and Realme UI 3.0 delights, along with a new look and functionality. Below is a link to the update’s full changelog, which applies to both smartphones (they are the same phones, after all).
A limited number of users in India are currently receiving the Realme UI 3.0 stable upgrade for the 8 5G and Narzo 30 5G; assuming no defects are discovered, a wider deployment will start in a few days.