Just to be correct: It is named "Activiti" and it is not an alfresco-only project but with a combined effort of a couple of team members :-)
But that is indeed interessting, so jBPM 5 is really based on DroolsFlow? I thought as well that it is a new code base inspired by both projects... Have to have a look into it asap, too less time all the time :-/
Cheers
Bernd