It seems that the Enhydra group is still working hard on some novel products (a long time fan of XMLC):
"Shark is completely based on standards from WfMC and OMG using XPDL as its native workflow definition format. Storage of processes and activities is done using Enhydra DODS."
"JaWE (Java Workflow Editor) is the first open source graphical Java workflow process editor fully according to WfMC specifications supporting XPDL as its native file format and LDAP connections." Workflow Application Declaration and Workflow Process Definition.
Latest XPDL specification (PDF). Kowari will be shipping with the latest version of Barracuda.