Just read the first (last) post from the planetjBPM blog:
It has been over a year now since I posted here.? Any of you who have been following development of opensource bpm solutions and jBPM in particular might have a clue about why it took so long (at least partially). Not that long ago, I made the ?formal? decision to not use jBPM anymore. It has to do with a new job, things within the project and alternative solutions.
It seems Activiti has stolen jBPM's thunder. Folks like Ronald were critical to jBPM's community.