ECMAScript 6 and Browsers support

We all know ECMAScript 6 was released in June 2015. Many new features made part of final edition of it. Work on ECMAScript 7 has started now.
Browsers are trst to implement these features assp.

https://en.wikipedia.org/wiki/ECMAScript Wikipedia
has good updates on where browsers stand. So far IE11 seems to be leading this race, followed by Chrome.

All web developers must read the ECMAScript specifications at: http://www.ecma-international.org/ecma-262/6.0/

Good Luck!