Moto X4 on Project Fi starts getting the Android 8.1 Oreo update
Moto X4 on Project Fi. The official changelog confirms along with Android 8.1 Oreo, the update adds the April security patch.
On top of that, Moto X4 owners will benefit from other improvements like the brand new dark theme and power menu, as well as some under-the-hood tweaks. You'll also notice that some icons have been slightly redesigned.
It's unclear how large the update really is, but don't expect it to be as large as Android 8.0 Oreo. The regular Moto X4 model has yet to receive the update, but it's unlikely that Motorola will delay it for too long.