• Classes – syntax for declaring classes in ES6.
• Promises – allows easier and cleaner asynchronous coding. Adds the Promise constructor, along with the ‘all’ and ‘race’ utility methods to the language itself.
• Iterators – enables iteration over iterable objects (including arrays, array-like objects, iterators and generators), invoking a custom iteration hook with statements to be executed for the value of each distinct property.
• Arrow Function – the arrow (=>) provides a shorthand for the function keyword with lexical ‘this’ binding.
• Math, Number, Object, String, RegEx Built-ins – dozens of new utility functions and properties for manipulating and inspecting data.
• Object Literal Enhancements – adds computed properties, concise method definitions, and short-hand for properties whose value is initialized to a same-named variable.

Giving Feedback

Last month, we introduced the IE Platform Suggestion Box on UserVoice where developers can suggest and vote on improvements to the platform. In this release, we’re adding a feedback tool right in the top-level UI. Just click the smiley face icon to “send a frown” such as reporting a problem on a site. If the page is running in Edge mode, you can also try reloading in the “compatibility mode” (IE11 behavior). You can also report issues through Connect or the Windows Feedback app in the Windows 10 Tech Preview.