With jBPM 6 plugin we can create only one project which contains human tasks. In jBPM 5 there are multiple options was available while creating project.
hope it helps..
you have to go to the eclipse market place and download the latest JBoss Tools Plugin for Kepler and then you would see the JBoss JBPMN Project facets in the list when you go to create the new BPMN project.
Hope this helps