Google rolled out Android N Developer Preview 2 (NPC91K) with new features and bug fixes. New features include launcher shortcuts, Vulcan 3D graphics API, Unicode 9 emoji, new folder icon, multi-window feature enhancement, etc. Bug fixes include Wi-Fi connectivity problems, camera glitches, messenger crashes, microphone remains muted across calls and many more.
The most visible changes in Android N Developer Preview 2 might be the new folder icon, new look for people emoji (with Unicode 9 support), new clear all button for recent app list, option to set separate wallpaper for lockscreen and quick settings tile for calculator.
The Launcher Shortcuts is one of the most useful features in this update. It will help you perform specific app functions more easily. For example, you can set a shortcut on the launcher to quickly navigate to a specific location using Maps app or compose an email quickly by just taping the shortcut and more. You do not need to launch the app first to use the shortcut function.
The Android N Developer Preview 2 is available for testing on the Google Nexus 5X, Nexus 6, Nexus 6P, Nexus 9, Nexus Player, General Mobile 4G and Pixel C. If you have opted for Android Beta program, you will get the OTA update for the OS. New users can download the factory image [HERE] and flash it manually [HERE].
Android N will be the next major version of the OS that supports multi-window, direct reply for notification, faster OS upgrade and a number of new features, performance boost, extended battery life, UI changes and more. Android N is not ready for the public yet, which will release (most likely!) at the end of this year. (Source)