The latest update to Facebook's Graph API gives developers more say over when and how they opt into new features. Facebook also updated its Android and iOS SDKs.
The newest version of the Google Drive API should help developers more easily add Drive to their own apps. Google says the improved API is more consistent and simpler for first-time developers. Drive within apps can be used for file storage in addition to creating and editing files.
Google rewarded developers at its I/O conference today with a wholly revised set of core tools. Android Studio 2.2 is meant to help developers take advantage of all the new features in Android N, while Firebase now comprises a suite of 15 tools to help with app analytics and performance.