Update 1: 2017/09/15 10:44am PDT
Motorola has published a blog post confirming all the devices above, along with the as of yet unreleased Moto X4. We also forgot about the Moto Z Play Droid - whoops.
Back in the days when the Moto X could be used with one hand and Moto Maker was a cool new thing, Motorola was one of the best manufacturers with software updates. Since their skin is so minimal, anything else would be disappointing.Read More
[Update: Moto X4 too] Motorola reveals the Moto Z and Moto G devices that will get Android Oreo, G4 series excluded was written by the awesome team at Android Police.