The Internet Explorer product team has created a special page where developers can learn which parts of HTML5 and other web standards are already supported, which are in development, or which are not yet planned to be implemented. You can quickly find all the essential information in one place. From what version can you use what, at what stage is the specification and how are other browsers doing. There is a short description of everything, so you will immediately know what it is.
The statusIE page also offers information that has so far only been published on the PDC developer mailing lists, or later on Build. You can filter individual items and one of the filters is status In Development. You will learn that Microsoft is preparing support for IE Cross-Domain Font Loading, CSS Transforms - preserve-3d, DOM Level 3 XPath, ES6 Array, Math, Number and String, GamePad API, Web Driver and WebGL Instancing Extension.
