None of those devices get the developer preview. All Android One devices get updates from the manufacturer, usually several weeks after release. A developer wi

None of those devices get the developer preview. All Android One devices get updates from the manufacturer, usually several weeks after release. A developer with a Pixel can test their app on P in spring. A developer on a Moto X4 or a Nokia can test their device in late autumn. That's 6 months extra time to fix bugs and adjust to new APIs.