New in v1.10:
• Smart I/O: Reduce code size when using printf related functions.
• Interrupt Context-Saving Improvements: Supports the new PIC32MX5, MX6, and MX7 families that enable users to assign any interrupt priority level to the shadow register set.
• APPIN/APPOUT Debugging Support: The new PIC32MX5, MX6, and MX7 devices support the APPIN/APPOUT debugging feature that allows a target application to write text or data to an MPLAB IDE window without halting the target device.
• Stack Limit symbol in built-in linker script: The default linker script now provides an _SPLIM symbol that can be used in code to help detect a stack overflow at runtime.
• Predefined macro for Feature Set: The compiler predefines a macro based on the features available for the selected device.

Compiler Features
• DSP library- C callable DSP functions written in assembly using the standard MIPS DSP library APIs. A future compiler release will contain a second set of APIs that are compatible with Microchip's 16-bit compilers.
• Quick Migration- Complete run-time optimized peripheral libraries that are API compatible with Microchip compiler libraries for 16-bit products.
• Even Smaller Code Size- Use 16-bit instruction mode for up to 40% code size reduction
• Small and Fast- Mix 16- and 32-bit instruction types in the same source file: 32-bit instructions for performance critical code and 16-bit instructions for size reduction
• ANSI compliant with standard, math, memory, and data conversion libraries
• New highly optimized math library functions in v1.03 and later
• Supports in-line assembly
• Single and multi-vector interrupt support
• Generates relocatable object modules for enhanced code reuse
• Allows code and data to be located at absolute addresses

A special version is available for Academic use.