This release contains installers for Node.js powered by ChakraCore. This Node.js will work side-by-side with any existing Node.js with v8 installation. You can look for "Node.js (chakracore) command prompt" in your start menu to launch Node.js with ChakraCore.
MSI installers are for x86 and x64 architectures and the ARM binaries bundle is to be used for manual deployment on ARM devices such as Raspberry Pi2.
See ChangeLog for changes in this release.