Sprint has started rolling out a new update to Nexus 6P units on its network. Arriving as build version N4F261, the Android 7.1.1 based update brings along security patches for the month of January - it bumps the Android security patch level to January 5. Given that the update has just started rolling out, it may take some time before the update notification pops up on your device's screen. Meanwhile, if you feel impatient, you can manually check for the update by heading to your handset's Settings menu. Via
Source: http://www.gsmarena.com/nexus_6p_on_sprint_getting_january_security_update-news-22696.php
