JAXP interface (transformation, XPath, schema processing)
Support for DOM, JDOM, DOM4J, and XOM
XSLT 2.0 implementation
XQuery 1.0 implementation
Serialization
Extensibility mechanisms
XML Schema 1.0 implementation
XPath 2.0 implementation
Functions, operators, and data types for XPath 2.0
Saxon extensions to the W3C XSLT/XQuery specifications
System Programming Interfaces
Internal changes