We're getting ready to merge the JBoss fork of the BPEL Designer code back into the eclipse.org repository. This will include many bug fixes and a few enhancements. The merge should be complete by the end of this month, so stay tuned.
Some new things are in the works for the BPEL Designer at eclipse.org. Vincent Zurczak, one of our committers, has been thinking about how to improve the user experience. Please have a look and let us know what you think.