As such, users of 32-bit operating systems may now find that they can enjoy more stability while using the most memory intensive tools. RawTherapee-4.2 includes many speed and memory usage optimizations (refer to the full changelog for detailed information). RawTherapee 4.2 has been released with various major changes and improvements. RawTherapee 4.2 is the latest version available of the RawTherapee software.