JBoss Messaging 1.0.1.CR1 is available for download on sourceforge (http://sourceforge.net/project/showfiles.php?group_id=22866&package_id=157261)
and jboss.org (http://labs.jboss.com/portal/index.html?ctrl:id=page.default.downloads&project=jbossmessaging).
Updates: EJB3 MDB example, Postgres and Oracle persistence configuration examples, possibility to specify multiple connectors (transports) per server instance, de-monolithized server configuration (currently there are individual configuration files for server itself, destinations, connection factories, persistence and remoting) improved documentation, various deployment, serialization and other minor bugs fixes.
For a complete list, go to http://jira.jboss.org/jira/secure/ReleaseNote.jspa?version=12310707&styleName=Html&projectId=12310061
The next release CR2, will include: http://jira.jboss.org/jira/secure/IssueNavigator.jspa?reset=true&pid=12310061&fixfor=12310781