Android 7.1.2 Beta is rolling out for Nexus 6p
What's New in Android 7.1.2
Android 7.1.2 Starts rolling out many Nexus and Pixel devices with bug fixes and enhancements features of devices. One of the most noticeable change came to Nexus 5X device enables you to swipe down fingerprint gesture for notification toggle. But this feature only for Nexus 5X device and miss in all other devices like Nexus 6p and pixel.
The factory image doesn't appear live on the android image site yet, but for beta tester who register for beta program getting this update. This new update file is around 1.29GB(that's preety large). You have to wait if you not get any update for android 7.1.2 its came too all devices in few days.