The latest update to Android Marshmallow is pushing out OTA to the Nexus 6. This is Android 6.0.1 and the official firmware is build MMB29K and MMB29M. The features and fixes included in this update are:
  • December security fixes
  • A new font to Android at a system level
  • A large smattering of new emoji

If you are on stock (official) firmware, you can use these download links below to manually move from a current build to the new one:

Be sure to stop by our dedicated Nexus 6 section for further discussion and tips on manually grabbing the update: Motorola Nexus 6 | Android Forum at