Google has released its monthly security bulletin for January. There are two levels, one for January 1 and one for January 5. The first level covers only one critical fix and the other covers a lot more, many of which are related to NVIDIA and Qualcomm.
The factory images and OTA images are now available from Google. You can get them for the Pixel, Pixel XL, Pixel C, Nexus 6P, Nexus 5X, Nexus Player, and Nexus 9. Hit the source links to download them if you’re willing to flash. If not, you can just wait for the OTA update to reach your device. Let us know when you get it!