Release 32.0.0 features a slew of bug fixes and a number of major improvements, most notably the introduction of JDK17 support, and a major uplift in the Newts backend.
For a high-level overview of what has changed in Horizon 32, see What’s New in OpenNMS Horizon 32.
For a complete list of changes, see the changelog.
The codename for Horizon 32.0.0 is Cavernous Death Metal.
See the differences between Horizon and Meridian.