Few days ago Motorola released a list of devices which would get the new Android Oreo (8.0) update. 

 

Below is the full list of our smartphones that will be getting the Oreo OS upgrade:

moto z
moto z Droid
moto z Force Droid
moto z Play
moto z Play Droid
moto z2 Play
moto z2 Force Edition
moto x4
moto g5
moto g5 Plus
moto g5S
moto g5S Plus
Source : https://blog.motorola.com/2017/09/14/say-hello-android-oreo/

However, Moto G4 plus and Moto M were the devices which were expected to be updated but they did not include them in the list.

After a few days Motorola confirmed that Moto G4 Plus will get the update.

Moto M is a new device which is just 9 months old and costs more than Moto G4 Plus. It was marketed as a premium smartphone. So why it is not included in the list. I would want Motorola to update it to Android Oreo as all the users have spent their hard earned money on this phone and it is a fairly new device.