Both very hopeful for IE9 and also very pessimistic about it's adoption. IE is currently the bane of our office. We made a decision earlier this year to use CSS3 and it's really hurt the look of our sites in IE browsers. They're still absolutely functional, but lose all the rounded corners. Webkit (and Chrome in specific) has become the browser of choice for all the developers in the office. Not only is it the most forgiving when dealing with renders, but has the best tools for troubleshooting.
I'm still content with Safari and won't be changing, but I think maybe MS should consider a rebranding? The word Internet Explorer leaves a bad taste in a lot of people's mouths that won't be fixed even if they DO fix a lot of the problems with IE.
From what Microsoft has shown I think it definitely looks like IE is going in the direction they should be going. However I'm sticking with AOL seeing how I've been with them for over eight years now and I've been with them through thick and thin so why give up on them now?