Microsoft is trying
That’s nice, it’s just a little painful to watch. Case in point, IE9 will most likely be released somewhere in 2011 with technologies that other browsers already had last year. We can assume that they’ve come up with some very useful tests as they did for IE8 covering a wide range of use cases. They’re not to bothered with the ACID3 test, which is also actually looking at edge cases not to mention non-existing cases. As a designer I don’t see the ACID3 test as being very useful for my work.