Android 7.1.1 Developer Preview Images and OTA's are now available for few Nexus Devices including the Nexus 5X, Nexus 6P and Pixel C.
As announced earlier by Google that Developer preview will hit the Nexus Devices by the end of October and Yes, they are finally here.
Also Read:- What's New in Android 7.1
Users can get the Android 7.1.1 Dev Preview update in three ways namely
1) Android Beta Program
2) Flashing Factory Images
3) Flashing OTA .Zip file
The new Android 7.1.1 has build NPF10C, You can download the Factory Images and OTA .zip from the link below.
Download:- Factory Images | OTA .Zip Files