Three weeks ago, Google released the first developer preview of Android N. In the past years, they announce the developer previews during Google I/O but this time they did it earlier.
Developers can now download Preview 1, the updated SDK, system images, and tools from developer.android.com/preview. Google has also announced Android Beta. By enrolling devices to Android Beta, they can try pre-release Android versions and automatically receive OTA updates as soon as they are available.
Some of the new features of Android N includes Multi-window, Direct Reply from notifications (via RemoteInput API from Android Wear), Bundled notifications, Java 8 support, Doze improvements, and more! Check out the video below for a summary of what's new: