Release v3.1.1 contains 74 fixes, including improvements and new features. Most notably the migration to a new SOAP/REST API.
Additionally it contains 9 critical security fixes that have been privately shared via the Apache Software Foundation as security report.
Downloads and documentation is available from our project website http://openmeetings.apache.org/downloads.html
For a full list of all delivered enhancements please see our Jira list:
3.1.1 will replace the 3.0.x tree, which will no longer receive updates. The migration from 3.0.x or from even older 2.x and 1.x versions can be done using the existing backup export and import mechanism (see http://openmeetings.apache.org/Upgrade.html).