The Android One edition of the Motorola Moto X4 is getting updated to Android 8.1 Oreo as we speak. The firmware is labeled OPW28.46-3 and brings along the March 1 security patch.
The standard version of the phone will likely get the 8.1 update soon. The Android One Moto X4 got the 8.0 Oreo update just a week earlier.
Oreo 8.1 brings the Pixel 2 launcher look as well as dark and light themes (automatically assigned depending on your wallpaper) and a few minor performance tweaks.
Source | Via