Motorola has officially confirmed that Android O also called Android Oreo / Android 8 will be rolled out on selected devices. The company has also listed out the devices that will get the update on their official blog. The Android Oreo update will begin rolling out later this month.
The update will be in a phased manner so in case if your device is listed in the update list and you have not got the update, wait for few more days / weeks you will get the update notification. The Motorola Android Oreo update will retain your data, but on a safer side better take a back up of important data.
Here is the list of Motorola Smartphones that will get Android 8.0 (Android Oreo) update
Moto Z Series – Z, Z Droid, Z Force Droid, Z Play, Z Play Droid, Z2 Play, Z2 Force Edition
Moto X Series – X4
Moto G Series – G5, G5 Plus, G5S, G5S Plus
So in case you are using any of the Moto handset listed above, you will get Android Oreo update on your smartphone, starting this fall.