Microsoft is following its release of the Windows 8.1 Preview download with the IE11 Developer Preview for Windows 7.
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IE11 supports HTML5 link prefetching and prerendering, so developers can help the browser anticipate where users will go next — and then get those pages ready.
Claiming to offer faster page load times (don't they all?), new standards support, and completely revised F12 developer tools, the Developer Preview of IE11 is said to offer web developers a route to building professional-quality web video, as well as hyper-fast 2D and 3D web technologies that make the most of the underlying hardware.
For developers, Microsoft is also providing an update to modern.IE, including a new cross-browser website screenshot service and new virtual machine images.
NOTE: modern.IE is a dev center with free tools and resources built so web programmers can spend less time testing for the various versions of Internet Explorer and more time building.
Microsoft says that IE11 is the first browser to natively decode JPG images in real-time on the GPU, so pages load faster and use less memory, reducing power consumption and improving battery life.
According to the MSDN, "IE11 is also the first browser to render text on the GPU. Text and images are the heart of the Web, and accelerated text and JPG performance impacts nearly every page you see. Loading web pages faster means being smarter about fetching site content. IE11 is the first browser to implement the W3C Resource Priorities standard enabling developers to specify which parts of the page are important and need to be loaded first."
On Windows 8.1, IE11 also supports the SPDY network protocol, the precursor to the HTTP 2.0 specification, enabling some sites to be downloaded faster.