OnePlus has announced new stable versions of its version of Android, OxygenOS, for its premium mid-ranger the Nord. In addition, the 7T, 7T Pro, 7 and 7 Pro have also been updated. All of these OTAs contain the September 2020 security patch; meanwhile, the Samsung Galaxy A50 has one for October already.
https://www.notebookcheck.net/OnePlus-upgrades-the-Nord-along-with-its-2019-flagships-to-September-2020-security-patches.496623.0.html