According to BusinessWire today, as accessed from java.net:
“JBoss Group LLC … today announced that it will be offering professional support services to customers using Mac OS X version 10.3 ‘Panther’ Server, which features the open source JBoss application server. Specifically, JBoss Group will offer a full range of enterprise-level services, including support, training and consulting services.”
The new Panther Server with JBoss will allow you to develop and deploy EJB components, messaging, and other J2EE functions and services. For more, see related Apple press release.