OnePlus has announced a new software update for the 7, 7 Pro, and 7T Pro. These stable new updates bring the same bug-fixes and feature additions to each of these devices. They also update their security patch levels to January 2020.
https://www.notebookcheck.net/OnePlus-updates-7-and-7T-phones-with-January-2020-security-patches.453964.0.html