After the India exclusive Motorola One Power received Android Pie, the international Motorola One is next down the pipeline. And this is actually the first internationally-available Motorola device to get the latest OS release.
Supposedly, since the Motorola One and One Power are on the Android One program and have already received the OTA update, the Moto X4 Android One's update should be just around the corner as well. Still, there are plenty of other Motorola devices to get the sweet Pie and users are waiting.
Unfortunatly, Probably not. The Moto X4 was released with Android 7.0, thus its 2 years of OS upgrades would bring it to Android 9.0.
Where is xiaomi warriors now? does your phone got the latest android version?
You should post that the non Android One version of the Moto X4 is also recieving Android Pie stable version in Brazil. It's posted on XDA from 2 days ago.