The key enhancement, available now to developers in a preview, is integration of all the components into a "cohesive" platform—BPEL Process Manager (Web services orchestration engine), Enterprise Service Bus, Web Services Manager, Business Rules Engine, Business Activity Monitoring (BAM), and a Service Registry.
The current suite is a bundled offering. Oracle describes the Java suite as "hot pluggable" because, in addition Oracle's app server, it works with IBM WebSphere, BEA WebLogic, JBOSS, and other apps.
