SyncroSoft has released <Oxygen/> 10.0, $366 payware XML editor written in Java. Oxygen supports XML, XSL, DTDs, XQuery, SVG, Relax NG, Schematron, and the W3C XML Schema Language. This feels like a fairly minor update with lots of small improvements rather than big new features. (That happens to most products after a few years if they're any good.) According to the announcement:
One of the most important additions in Oxygen XML Editor and Author version 10 is the bundling of the schema-aware XSLT 2.0 and XQuery processor from Saxonica. Saxon-SA is now available in all Oxygen editions at no additional cost.
Version 10 comes with a large number of improvements including a powerful new XML instance generator, better content completion offering proposals from included or imported XML Schema or XSLT modules, a better integration of the Intel(R) XML Software Suite and updates the document frameworks and XML, XML Schema, XSLT, XPath and FOP processors.
The SVN support was also updated to include Subversion 1.5 features.
I could have sworn Saxon-SA was already bundled in version 9, but maybe I'm wrong about that. I rarely use the SA features anyway.