In Windows 8, we reimagined the browser with IE10. We designed and built IE10 to be the best way to experience the Web on Windows. With the IE10 Release Preview for Windows 7 consumers can now enjoy a fast and fluid Web with the updated IE10 engine on their Windows 7 devices. The release preview of IE10 on Windows 7 is available for download today.
IE10 on Windows 8 brings an entirely new browsing experience and set of capabilities to the Web, such as a new touch first browsing experience and full screen UI for your sites, security improvements that offer the best protection against the most common threats on the Web, improved performance, and support for the HTML5 and CSS3 standards developers need.
See the full post at http://blogs.msdn.com/b/ie/archive/2012/11/13/ie10-fast-fluid-perfect-for-touch-and-available-now-for-windows-7.aspx.