Paul Thurrott has a very nice Office 2010 Technical Preview in which he goes through the new features and look in quite a lot of detail. As someone who just started working in a "real" office again, and being saddled with Outlook again, I really hope that the new "conversation view" replaces the absolute suck that is the current outlook view. Come on, at least an option to have "real" threading guys.... Some shots of this can be found in search, still looking for something with some more detail though. I hope it takes the same tack as GMail and it's conversation view, as that seems to work very well for people.
Anyone got a technical preview I can be a part of? :)