ser arrives after seven platform previews, one beta and one RC almost exactly one year after the release of the first platform preview in march of 2010 - and almost exactly two years after the release of IE8.
The downside of IE9 is the fact that it is only supported by Windows Vista SP2 and higher - with a special focus on Windows 7. If you run Windows XP, you are stuck with IE8, or, if you follow Mozilla's Asa Dotzler, you can always use Firefox 4. That browser is, by the way, now scheduled for a March 22 release.
You can download the browser here:
Internet Explorer 9 for Windows 7 32bit
Internet Explorer 9 for Windows 7 64bit
Internet Explorer 9 for Windows Vista 32bit
Internet Explorer 9 for Windows Vista 64bit