As predicted, Google has announced that Android 7.0 Nougat will start rolling out to selected devices from today.
The first wave will provide over-the air update for Nexus 6P, Nexus 5X, Nexus 6, Nexus 9, Nexus Player, Pixel C, and Android One handsets.
There are many new devices are already in pipeline like 2016 Nexus handsets, LG V20, which will support Android 7.0 out of the box.
LG V20 will be the first device to support the Android 7.0 and most probably Nexus phones will follow suit.
What New In Android 7.0
Android 7.0 includes many new changes, under the hood optimisation and some new features.
Most notable feature includes Multi-window support, Quick settings panel redesign, Direct reply, Direct Boot etc.
It also enable the VR mode in Android. This is integrated in the system and it will be easy for companies to work with VR system in Android.
There are some under the hood optimisation also included like Doze optimisation to improve battery life, faster app installs and upgrades, Brand new JIT/AOT compiler for faster performance.
The source code will also be be pushed to Android Open Source Project (AOSP) branch.
Currently the factory images are not pushed on the Nexus page. Once they are uploaded, you should be able to use them to upgrade or wait for over the air software update for Android 7.0 Nougat.