I just released GPD 3.1.2. Obviously a number of bugs are fixed with this release but there is also an interesting novelty. This new addition is an ESB service node that allows you to call a service in the JBoss ESB.
The three screenshots above show how this node is laid out and configured on the graphical view. The screenshot below shows the XML that is generated in the source view.
This release will be included in the upcoming release of the JBoss SOA platform. The details are found in the release notes. You can download it at the usual spot.