From the Internet Explorer team:
I’ve gotten questions about the ship date. Yes, we have a date in mind. I’ll talk about the date after we get feedback from customers and partners. We’re going to release a beta and listen, then refresh the beta and listen some more. We’ll ship when the product is ready.
This is a refreshing point of view, that you don't hear too often. I imagine that the IE team is under a certain amount of pressure, due to Firefox's increasing marketshare.