IE11 Developer preview for Windows 7 and Windows Server 2008 R2 is now availablefor download and testing.
What’s new in this release?
Faster, More Responsive Browsing.
render text on the GPU.
W3C Resource Priorities standard.
ECMAScript 6 standard.
IE11 supports features including let, const, Map, Set, and WeakMap, as well as __proto__ for improved interoperability.
support for WebGL.
closed captioning (TTML and SDP).
HTML Full Screen API.
All-new F12 Developer Tools.
Download IE11 Developers Preview