WTP 1.0 defines a platform API for third-party commercial adoption and extension, and offers a new feature called "facets" which helps users to understand where they can deploy different features.
The WTP project includes source editors for HTML, JavaScript, Cascading Style Sheets, JavaServer Pages, SQL, XML, Document Type Definition, XML Schema Definition and WSDL, as well as graphical editors for XSD and WSDL. "The graphical editors are important," [project lead Tim]Wagner said. "People don’t always understand the different syntax. If you’re concentrating on Web services, the goal is to make you productive without worrying about the details of how a WSDL file is put together."
WTP 1.0 can be downloaded here.