Google has recently announced that users can download 7.1 Nougat Developer Preview. This is the same version that is installed in Pixel.

Users can Sign Up Android Nougat 7.1 on public Nougat Android beta program which is also for actual Nougat Preview.

If you are already part of program, you will start getting the updates.

Android 7.1 Nougat can now be tested on Nexus 5X, 6P or Pixel. Starting Next month it will be available on more devices.