To add to what Gerard wrote:
WiktionaryZ follows a typical subject/predicate/object logic in its
primary representation (though it deals with homonyms, synonyms, and
translations better than most ontologies). Exporting to OWL should not
pose principal problems, though I haven't investigated the question in
detail (in particular, what would be needed to match WZ entities to
classes in OWL).
Our key development priority for the coming weeks is to build a
versioning architecture to move towards opening up the site in a true
wiki fashion. We also seek to open up the development process itself,
by providing code documentation, bringing the codebase in line with
the current SVN version of MediaWiki, and so on. I hope we will be
able to make some progress in that regard before Wikimania, which will
be a primary opportunity to show the current state of the project to a
group of interested developers. Quite possibly, this will already lead
directly to the kind of developments which you describe.
Those interested in WZ should definitely get a flight ticket to
Boston. There are several relevant talks and workshops at Wikimania.
Erik