Its here! One of the many announcements at mix09. You have just to love this video and go get IE 8 now.
<a href="http://video.msn.com/?mkt=en-US&playlist=videoByUuids:uuids:dc85f3da-9951-4167-8209-66202d255de2&showPlaylist=true&from=msnvideo" target="_new" title="IE8 Net History">Video: IE8 Net History</a>