Blizzard is displaying pages in pure XML and XSL

Are we getting one step closer to moving into the Semantic Web? Blizzard is displaying pages in pure XML with XSL laying out. Check out the Archivist Class in Diablo 3. As you will see in the source, they basically have a hierarchical system of xsl/xml imports to streamline development without creating new full XSL files for each page.

This is just awesome to see a full production site using this system so powerfully. I've only used this is development tests, but this may give me courage to run with it for a web project.