Android 4.3 of Jelly Bean announced, includes great new features for users and developers. Android 4.3 powers the new Nexus 7 tablet and it’s rolling out now as an update to Nexus 4, Nexus 7, Nexus 10, and Galaxy Nexus HSPA+ devices across the world.
For developers, Android 4.3 includes the latest performance enhancements to keep your apps fast, smooth, and efficient, together with new APIs and capabilities to use in your apps.
Know more: http://android-developers.blogspot.hk/2013/07/android-43-and-updated-developer-tools.html