Saxon
XSLT 2.0 implementation
XQJ (JSR 225) interface
System Programming Interfaces
Saxon SQL extension instructions
Functions, operators, and data types for XPath 2.0
Changes specific to .NET
Extensibility mechanisms
Saxon extensions to the W3C XSLT/XQuery specifications
Serialization
Streamed processing of input documents
Localization (natural language support)
Internal changes
Optimizations and performance improvements