The Acid3 Test has been released by the Web Standards Project.

There's an article on DrunkenFist with screenshots of how the most common browsers render the test. From what I can see not a single one passes with 100/100, but Safari 3 gets pretty close with 87. Of course, Internet Explorer fails miserably, but I'd expect nothing less. Firefox 3 doesn't mess up the layout as much as the others, but still only scores 59/100.

It'll be interesting to see how, and if, popular browsers like Firefox and Opera adjust to be better at handling the standards and whether any of them will be able to get 100/100 anytime soon.