Microsoft released IE9 final version and made available for download from beauty of web site. IE9 setup file will download and install required updates online, if you’re wondering for offline installer for IE9, you can download it from below.
IE9 Beta has been downloaded over 40 million users. If you’re using Beta or Release Candidate versions of IE9, you’ll be upgraded to final version automatically. You can read IE9 product guide here and release notes here.
If you’re 64-bit user,since 32-bit IE9 runs faster than 64-bit IE9 on 64-bit Windows 7, read installing 32bit version of IE9 on Version of Windows 7.
IE9 final offline installer download links