For instance, brms-p-5.3.1.GA-deployable-ee6 includes hibernate-core-3.3.2.GA.jar but JBoss EAP 6.0.0 includes hibernate-core-4.1.3.Final-redhat-1.jar and JBoss EAP 6.0.1 includes hibernate-core-4.1.6.Final-redhat-3.jar.

I'm under impression that brms-p-5.3.1.GA-deployable-ee6 should provide the same version jars as EAP 6 so that users can test with those jars and then deploy the application on EAP 6.

Actually, if I run jBPM5+JPA2 with jars under brms-p-5.3.1.GA-deployable-ee6/jboss-jbpm-engine/lib, I get the following Exception:

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org.xml.sax.SAXParseException: cvc-complex-type.3.1: Value '2.0' of attribute 'version' of element 'entity-mappings' is not valid with respect to the corresponding attribute use. Attribute 'version' has a fixed value of '1.0'.
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which was fixed in hibernate 3.5.6.

https://hibernate.atlassian.net/browse/HHH-5310 

If I switched hibernate libraries to ones in EAP 6.0.1 (hibernate 4.1.6) and it seems to work fine. (Attached an example project)

I confirmed with Lukas that jBPM5+JPA2 is supported/tested with EAP 6. So brms-p-5.3.1.GA-deployable-ee6 should be fixed.