New XQuery / XPath Working Drafts

The XQuery working Group has just published new versions of the 
following specifications:

XQuery 1.1: An XML Query Language
http://www.w3.org/TR/2009/WD-xquery-11-20091215/

XQueryX 1.1
http://www.w3.org/TR/2009/WD-xqueryx-11-20091215/

XQuery 1.1 Requirements
http://www.w3.org/TR/2009/WD-xquery-11-requirements-20091215/

These include a number of significant new XQuery features, including:

* group by clause in FLWOR Expressions
* tumbling window and sliding window in FLWOR Expressions
* count clause in FLWOR Expressions
* allowing empty in 3.8.2 For Clause (for functionality similar to
   outer joins in SQL)
* try/catch expressions
* Dynamic function invocation
* Inline functions
* Private functions
* Nondeterministic functions
* Switch expressions
* Computed namespace constructors
* Output declarations

The XQuery and XSL Working Groups have published First Public Working 
Drafts of the following specifications:

XPath 2.1
http://www.w3.org/TR/2009/WD-xpath-21-20091215/

XQuery and XPath Data Model 1.1
http://www.w3.org/TR/2009/WD-xpath-datamodel-11-20091215/

XPath and XQuery Functions and Operators 1.1
http://www.w3.org/TR/2009/WD-xpath-functions-11-20091215/

XSLT and XQuery Serialization 1.1
http://www.w3.org/TR/2009/WD-xslt-xquery-serialization-11-20091215/

Jonathan