The OWL Web Ontology Language is designed for use by applications that need to process the content of information instead of just presenting information to humans. OWL facilitates greater machine interpretability of Web content than that supported by XML, RDF, and RDF Schema (RDF-S) by providing additional expressive power along with a formal semantics.
The group's work is complete with the publication of OWL 2 (Second Edition). There may be new Errata and discussion on public-owl-dev@w3.org.
Second Edition Deliverables
See Documentation Roadmap for more details