The ebCore TC is working on version 3.0 and now has some first working
drafts.
One feature is full support for AS4. Here is a link to a blog post
that describes this aspect of CPPA3. http://ebxml.xml.org/blog/cppa3-a-cppa-that-supports-pmodes
I'm planning some follow-on post or posts to discuss the multi-protocol
feature (CPPA3 also supports ebMS2 and AS2 and other protocols), CPPs
and unification of CPPs in CPA, a to-be open sourced implementation of
such a unification, and support for named protocols (which provides use
of templates in support of message protocol profiles).