Documentation changes
System Programming Interfaces
Packaging, installation, and licensing changes
Command line interfaces
Extensibility mechanisms
Saxon extensions to the W3C XSLT/XQuery specifications
XSLT 3.0 implementation
Streamed processing of input documents
XPath 3.0 implementation
XPath 2.0 implementation
XQuery 3.0 implementation
XQuery Updates implementation
Functions, operators, and data types for XPath 3.0
XML Schema 1.0 implementation
XML Schema 1.1 implementation
S9API interface
Changes specific to .NET
Serialization
Using Saxon from Ant
Saxon SQL extension instructions
Internal changes