Some of the expected changes for IE9 include speedy graphics rendering for IE9. This will take advantage of a computer’s graphics hardware to better render online images, videos, animations and other graphics.
Another expected feature that should be detailed is support of new HTML/CSS code that creates rounded borders on text boxes. Also HTML 5 support will be discussed, and how much of it will be implemented.
Speed. The IE9 prototype is just as speedy as the other major browsers. By some standards, IE8 performs at least half as fast as Mozilla Firefox, Google Chrome and Apple Safari. So if they can compete at the speed level with the other browsers, that would be impressive.
Link-http://www.softpedia.com/progDownload/Internet-Explorer-9-Download-154695.html