Google just posted the Android security update for February 2017 and the files are already live for a number of devices.
So far, we are seeing 7.1.1 files for Pixel and Pixel XL (NOF26V, NOF26W), Pixel C (N4F26O), Nexus 6P (N4F26O, NUF26K), Nexus 5X (N4F26O), Nexus 6 (N6F26R), Nexus Player (NMF26X), and Nexus 9 (N4F26Q). The Nexus 6 also got new 7.0.0 builds of NBD91Y and NBD91Z.
In other notes, the NOF26W for Pixel and Pixel XL is listed as “Rogers Only,” so the NOF26V build should be for everyone. Also, we finally have a 7.1.1 build for Nexus 6P Verizon users as NUF26K.
You can grab each image or OTA file at the links below. For instructions on how to flash a factory image, here you go. For instructions on how to flash an OTA .zip file, here you go.
Links: Factory Images | OTA Files | Security Bulletin