As we told yesterday (Microsoft to launch IE 9 Beta today) IE 9 Beta is ready for download. You can download and install the beta version of IE9 from here., if you are a Windows 7 User. U need to download either 32 bit or 64 bit according to your operating system.
HTML 5 support
Allow to Pin a web page to the Windows 7 Task bar
Read more here
Here is a screen shot of Bing on IE 9