I wonder whether there is a plan about Eclipse WTP supporting XSLT 3.0 and XPath 3.1 spec.
Clicked around for a while in webtools site and PsychoPath XPath 2.0 Processor, but could not find any hint, when 3.0 specification of XSLT and 3.1 of XPath will be supported - e.g. syntax highlighting and failure indications. So far XSLT 2.0 and XPath 2.0 was good enough for me, but it changes.