BPMN and UML Activity Diagram

I think that consolidation of UML Activity Flow Diagram and BPMN would be a great thing to happen.

BPMN will eventually be passed on to an organization to formalize its status
as standard. The OMG is a likely candidate to eventually take in the BPMN
standards and there have been discussions between BPMI and the OMG to
facilitate this transfer in the future. Considering that the OMG is currently developing UML, which includes Activity Diagrams,it is possible that a
consolidation of BPMN Business Process Diagrams and UML Activity Diagrams will
take place.

Reference:
Stephen A. White, IBM Corporation
http://www.bpmn.org/Documents/Introduction%20to%20BPMN.pdf