Before you download the Internet Explorer 9 Release Candidate (RC), you should weigh the pros and cons of installing software that's still in development. The "Release Candidate" designation means that Internet Explorer has most of the features that will be included in the final release, but it's still being tested. Information from Release Candidate users will help to make the final product even better. If you install the RC, you'll get to try out the many new features in Internet Explorer 9, but you might also experience a higher frequency of errors than you would using an earlier version of Internet Explorer.

What's new in IE9

Windows Vista: 32-bit | 64-bit

Windows 7: 32-bit | 64-bit