According to the IE Blog, Internet Explorer 8 passed the Acid 2 test - more on this.
It will obviously take years before it is released and people actually leave IE 6 and 7 for it, but still, it shows that Microsoft seems to be on the right track.
So rejoy, web developpers, maybe some day it will finally be possible to write XHTML/CSS code without ugly tricks in order to work around IE bugs and limitations. Maybe. There’s hope.