Google releases Android Wear 2.0 Developer Preview 4 with OAuth API, in-app billing, and cross-device promotion

Google today released Android Wear 2.0 Developer Preview 4, which focuses on adding new APIs that help developers build more powerful standalone apps. New features include OAuth API for Android Wear, in-app billing, new APIs for cross-device promotion, and the return of swipe-to-dismiss.
Android Wear 2.0 was revealed at Google’s I/O 2016 developer conference, where the company called it “the most significant update to Android Wear” since the platform launched over two years ago