I don't think there is any BAM product being developing for jBPM. Even in the svn of jBPM3, there is a very small module named BAM-console. But it could only upload some JasperReport's templates and show the report.
If you want to monitor the jBPM, you could use the web-console, it is included in the distribution of jBPM4.
I was looking for a BAM solution too for JBpm but at the moment there is nothing similar. A Bam module it might be included in the new jbpm 5.