no not yet as a search of the jira would have shown you: https://jira.jboss.org/jira/browse/JBPM-2038 or a search with google: http://www.google.com/search?q=jira+jbpm+hibernate+session
(and you used the wrong forum)
I believe this feature is of great importance, especially in the jBPM integration in existing applications ... What is the possibility of it being included in version 4.2 ?
Well, it is not scheduled and there are not many votes for it, not have there been many requests in the forums, so the chance of it being included in 4.2 is virtually zero.
But in the jira, there is a kind of patch provided that might do what you want, so give that a try.