Topic summary
XSLT 2.0
Extracted from the Wikipedia article XSLT.
XPath
XSLT 1.0 uses XPath 1.0, while XSLT 2.0 uses XPath 2.0. XSLT 3.0 will work with either XPath 3.0 or 3.1. In the case of 1.0 and 2.0, the XSLT and XPath specifications were published on the same date. With 3.0, however, they were no longer synchronized. XPath 3.0 became a Recommendation in April 2014, followed by XPath 3.1 in February 2017. XSLT 3.0 followed in June 2017.