About -> Available Versions -> Version 3.1.x

OpenSIPS 3.1.x is a Stable release. It is recommended for production usage.

OpenSIPS 3.1 Overview - a glimpse in the blueprints of OpenSIPS 3.1 to see what this new release can do for you.
OpenSIPS 3.1.0 is the latest release from the 3.1 branch.

1.  OpenSIPS 3.1.0

Release notes: full technical listing
Release date: 22th of July 2020
Beta-Release date : 27th of May 2020