Google announced the latest test build on Monday. Members of Google's Android Beta Program have already started receiving OS updates to their devices, the final version of which will be available to all users of compatible smartphones in August. In addition, the new build includes the final version of APIs (Android 26.0.0 Support Library), which offers features such as Multiprocess Espresso and Android Test Orchestrator. Android O also finally features picture-in-picture, shortcut settings, an improved notification system and auto-fill forms. Google is currently sending out the Andriod O Developer Preview 4 update for its Pixel, Pixel XL, Pixel C, Nexus 5X, Nexus 6P and Nexus Player smartphones. And an incremental update to the Android Emulator system and the Android SDK will be available soon.