IE8 final has been released to the public, but I'll warn you those servers are swamped!
http://www.microsoft.com/windows/Internet-explorer/beta/
http://www.microsoft.com/windows/Internet-explorer/beta/
Peter, is IE 8 final playing nice with McAfee? I saw on the McAfee forums there were problems with IE 8 RC1 but saw it had been fixed. I'd install it on my system but I don't want to relive the problems I had when IE 7 first came out...