The Moto G5 and Moto G5 Plus are now receiving an update to Android 8.1 Oreo. While receiving a year old update is bad enough, the phones are also receiving the June 2018 Android security patch, putting the devices' security four months behind the curve.
https://www.notebookcheck.net/Moto-G5-and-Moto-G5-Plus-get-updated-to-Android-8-1-Oreo.350676.0.html