Release Notes for Development Tools: 15.0.0 (build: 422-f8fb16a) (rc3)
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Previous major release: 14.4.1 (build: 235-acbb966) (rc3)

NEW FEATURE ENHANCEMENTS
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* Support for development using xcore.ai family of products

  - Compiler support for new architecture. In particular, new FPU instructions
    supported
  - Simulator support for architecture core and chip-level features, including
    use of external memory and "software memory" via the new minicache
  - Assembler support for writing VPU code and new instructions
  - Debugger support for new architecture
  - XTAG firmware support for JTAG interface 
  - Support for XCORE-AI-EXPLORER board product
  - Continued support for existing xCORE-XS1 and xCORE-200 based products

* Enhanced support for programming in C
  
  - Inclusion of the lib_xcore system library and headers marks a shift in
    emphasis towards programming the xcore in C, rather than XC
  - The lib_xcore system library allows equivalents of XC constructs including
    select{} and par{} to be written without leaving the C language
  - XC compiler still included, though it is recommended that new code be
    written in C

COMPATIBILITY CHANGES TO PREVIOUS RELEASE
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* Removal of the xTIMEcomposer IDE

  - Marks a move towards allowing developers to partner the XMOS tools with a
    development environment of their choosing
  - Greater emphasis on command-line usage of the tools and the debugger

* Removal of the xta static timing analysis tool

  - Internal and external surveys point to very low usage of this tool

* xflash

  - Support for xcore.ai added
  - Now supports use of "software memory"

* The discontinued xtag2 is now unsupported

  - Users should upgrade to the newer xtag3