Support for DOM, JDOM, DOM4J, and XOM
Packaging, installation, and licensing changes
XSLT 2.0 implementation
XQuery 1.0 implementation
System Programming Interfaces
Schema-aware XSLT and XQuery processing
XML Schema 1.0 implementation
Functions, operators, and data types for XPath 2.0
Saxon extensions to the W3C XSLT/XQuery specifications
Internal changes
Extensibility mechanisms
Serialization