Treyarch has released a new game setting update for Black Ops 3 on PS4, Xbox One, and PC. The version number is 37.1*.21.4 (*number varies by platform).
This update fixes exploits in the game, and by Vahn’s tweet, it seems to be hinting at the Gun Game issue where players were farming Cryptokeys.
37.1*.21.4 – Patches exploits that ruin other people’s fun. Don’t be that guy. Nobody likes that guy.
— David Vonderhaar (@DavidVonderhaar) December 1, 2015