In case you missed it, from the W3C Weekly News: "The World Wide Web Consortium today released XML Schema as a W3C Recommendation in three parts: Part 0: Primer, Part 1: Structures, Part 2: Datatypes. The specification is stable and has been reviewed by the W3C Membership, who favors its adoption by academic, industry, and research communities. XML Schemas define shared markup vocabularies, the structure of XML documents which use those vocabularies, and provide hooks to associate semantics with them." For more see the press release or the Primer (which is itself a Recommendation too) for an introduction.
XML Schema now a Recommendation
By dchud - Posted on May 7th, 2001