Notifications - Custom quick settings tile for an activity Multi-locale - users can specify locale beyond their primary locale ScopedDirectoryAccess for the shared storage New file-level encryption mode (as opposed to block-level encryption) and the corresponding Direct Boot Java 8, Jack, and ndk support in Gradle GCC deprecated in favor of Clang Four types of sizes - raw apk size, download size (which includes expansion files), install size (apk size + oat files + extracted .so files), and update size ( binary diff) Resources.arsc is uncompressed since it has to be memory-mapped - don’t manually compress it.