Microsoft Internet Explorer Program Manager Tony Chor posted a entry on the IE blog back in June promising a Beta 2 release by the end of August.  August has been here for a while now and with only 6 days left, Microsoft is running out of time.

In addition to the features for developers we showed in IE8 Beta 1 , we’ve been working on great new features for consumers and IT professionals (as well as doing even more cool stuff for developers). I’m happy to announce that we’re on track to deliver IE8 Beta 2 this August when you’ll get a chance to see what we’ve been up to in these areas. Furthermore, in order to help us get even more feedback for this global product, we’ll be releasing Beta 2 in over twenty languages within a month of the initial release. This is a big step up from the three languages we released for beta 1 and much more than we ever did during IE7.

http://blogs.msdn.com/ie/archive/2008/06/03/ie8-beta-2-coming-in-august.aspx