Packaging, installation, and licensing changes
XSLT 2.0 implementation
XQuery 1.0 implementation
XQuery 3.0 implementation
Functions, operators, and data types for XPath 2.0
XML Schema 1.0 implementation
XML Schema 1.1 implementation
XQuery Updates implementation
Serialization
Schema-aware XSLT and XQuery processing
Saxon extensions to the W3C XSLT/XQuery specifications
Saxon extensions to the W3C XSD specification
S9API interface
Changes specific to .NET
Command line interfaces
Extensibility mechanisms
XQJ (JSR 225) interface
Internal changes
Optimizations and performance improvements
Handling of source documents
Streamed processing of input documents
Support for DOM and other external tree models