This issue is not a serious one, but rather cosmetical. BPMN2 Modeler should not use 'jBPM5' in the name of the target runtime. I think that this might confuse our customers. It should be renamed to 'jBPM6' or just 'jBPM'. What do you think? My env: BPMN2 Editor 1.0.0.201311042148, JBDS 7.0.1.GA (Build id: GA-v20130930-2238-B7).
I would recommend simply using jBPM (as we'll reach jBPM7 before we know it ;)). It's not applicable for jBPM4 or lower, but I guess that is what most users would expect anyway.
Should be fixed according to Bob in v1.0.1
Verified on JBTIS 4.1.3.Beta5. (BPMN2 Editor v 1.0.0) Seeing only 'jBPM'.