Saxon
Packaging, installation, and licensing changes
Documentation changes
Optimizations and performance improvements
Saxon extensions to the W3C XSLT/XQuery specifications
Support for DOM, JDOM, DOM4J, and XOM
Saxon extensions to the W3C XSD specification
Internal changes
Functions, operators, and data types for XPath 3.0
Command line interfaces
XML Schema 1.0 implementation
XPath 3.0 implementation
XSLT 3.0 implementation
JAXP interface (transformation, XPath, schema processing)
Streamed processing of input documents
XQuery 3.0 implementation
Changes specific to .NET
System Programming Interfaces
Extensibility mechanisms
Saxon SQL extension instructions
Serialization