Lenovo launched the Moto G5 and Moto G5 and in India early last year, and at that point, they were running on android 7.0 nougat out-of-the-box. Now, the 2 phones ar finally receiving the long overdue android 8.1 oreo update, and also the 1st ones to receive it ar users in India, Brazil, and Mexico.
To specify, the Moto G5 users in Mexico, and Moto G5 and users in India and Brazil are becoming the android 8.1 oreo update. The announcement was made on the forums, and also the moderator even saidthat the roll out is in an exceedingly phased manner, and will not hit all smartphones in real time.
The new android 8.1 oreo update brings on new options like adaptive icons, new Settings menu, image in image (PiP) mode, autofill Apis, new multi-tasking options, a lot of economical notification controls, improved knowledge saver, battery options, new power menu UI and Bluetooth enhancements. 
The update additionally brings on a number of bug fixes and stability enhancements.
There is no word on once android cookie update is taking off for the Moto G5s series. Meanwhile, Motorola is currently teasing the arrival of the Moto G6 and in India, with the launch event set for September 10. Motorola had proclaimed the Moto G6 lineup in Brazil that enclosed 2 alternative smartphones – Moto G6 and Moto G6 Play – each of that had already been launched in india in June.