As rumored, Google has released the developer preview for Android N. There are quite a few new features in this first preview. Multi-window has been rumored for a while, now it's finally showing up. There is also a picture-in-picture mode for watching videos. The rumored notification shade revamp is present in all its glory. The toggles are smaller and always at the top of the shade. Quick reply for messaging apps functions seamlessly in the shade. Other changes include tweaks to Doze mode and an effort to improve overall performance called Project Svelte.