IE7 Beta2
The one thing everybody's been talking about today: the launch of Internet Explorer Beta Preview. Here's the official stuff: Tour of new features, the Frequently Asked Questions and a request for feedback.
And the not so official, and thus more critical, stuff: WebDev screenshots in IE7 (a photoset on Flickr), Eric Meyer's Charting IE7b2, IE7 CSS Updates on Mezzoblue and The Real Reason Microsoft Won't Support CSS2 in IE7 by Dean Edwards.