About -> Available Versions -> Version 3.0.x
OpenSIPS 3.0.x is a Stable release. It is recommended for production usage.
OpenSIPS 3.0 Overview - a glimpse in the blueprints of OpenSIPS 3.0 to see what this new release can do for you.
Minor release (see Changelog from 3.0.0)
Release notes: full technical listing