After Paulo alerted me to the availability of IE8 RC1 (and after waiting a little while for the links to update from Beta 2 to RC1) I had a seamless install experience. No need to uninstall B2 on Vista, just run the installer and it takes care of the upgrade for you.
It’s worth checking the upgrade details on the IE blog here for your particular OS / IE version. You can install IE8 RC1 from the IE website here. Note: this build of IE8 will *not* work with Win7.
Updates in this release according to the IE Blog:
PingBack from http://blogs.msdn.com/mikeormond/archive/2009/01/27/ie8-rc1-available-now.aspx
An exciting time for web development with .NET. In typical “epic blog post” style, ScottGu announces