An AMD board known as "Kahlee" has shown up in ChromeOS's Coreboot code. The device will be based on 2016's Stoney Ridge rather than AMD's new Ryzen architecture. The existence of an AMD powered Chromebook together with the release of Ryzen 7 and 5-series chips suggests that AMD is making an all-out effort to reestablish itself in the market.
http://www.notebookcheck.net/AMD-may-be-expanding-into-the-Chromebook-market.211912.0.html