Hi Richard, as you may know JBoss Developer Studio is a commercial version of the IDE. They release new versions integrating the new plugins twice a year, as far as I know. Probably the next release includes the jBPM5 plugins, but jBPM5 was just released in february. You probably can try to install the latest snapshots of the community project and see if it works: https://hudson.jboss.org/hudson/job/jBPM5/lastSuccessfulBuild/artifact/target/
Greetings.