Must express data model in terms of the Infoset
Must provide common core syntax and semantics for XSLT 2.0 and XML Query 1.0
Must support explicit "for any" or "for all" comparison and equality semantics
Must add min() and max() functions
Any valid XPath 1.0 expression SHOULD also be a valid XPath 2.0 expression when operating in the absence of XML Schema type information.
Should provide intersection and difference functions
Must loosen restrictions on location steps
Must provide a conditional expression (e.g. ternary
?: operator in Java and C)
Should support additional string functions, possibly including space padding, string replacement and conversion to upper or lower case
Must support regular expression string matching using the regexp syntax from schemas
Must add support for XML Schema primitive datatypes
Should add support for XML Schema structures