There’s a great new post by the Chakra team on the implementation details of their previously-announced asm.js optimizations. These optimizations are reaching a preview state in Windows 10 / Edge which is an important milestone for asm.js and the compile-to-web story. Congratulations to the team!

https://blog.mozilla.org/luke/2015/05/07/asm-js-optimizations-previewing-in-windows-10-edge/