W3C

XQuery 3.0, XPath 3.0, XQueryX 3.0, XDM 3.0, Serialization 3.0, Functions and Operators 3.0 are now W3C Recommendations

The XML Query Working Group published XQuery 3.0: An XML Query Language, along with XQueryX, an XML representation for XQuery, both as W3C Recommendations, as well as the XQuery 3.0 Use Cases and Requirements as final Working Group Notes. XQuery extends the XPath language to provide efficient search and manipulation of information represented as trees from a variety of sources.

The XML Query Working Group and XSLT Working Group also jointly published W3C Recommendations of XML Path Language (XPath) 3.0, a widely-used language for searching and pointing into tree-based structures, together with XQuery and XPath Data Model 3.0 which defines those structures, XPath and XQuery Functions and Operators 3.0 which provides facilities for use in XPath, XQuery, XSLT and a number of other languages, and finally the XSLT and XQuery Serialization 3.0 specification giving a way to turn values and XDM instances into text, HTML or XML.

Read about the XML Activity.