support for general notification framework. Transports supported include JMS (JBossMQ, JBoss Messaging, Oracle AQ and MQSeries), InVm, TCP/IP, email, database or file system.
JBoss Messaging 1.4.0GA is now the recommended default JMS implementation.
JMS and SQL transaction integration.
More seamless integration when deployed into JBossAS.
jBPM integration.
WS-BPEL support.
Web Services support.
Improved deployment and configuration, using a specific ESB server.