The Windows Live team is giving a nice preview of the new Hotmail interface. They introduce the "sweep" (which lets you filter off "grey" email, lists you legitimately signed up for for example), integrate more tightly with Skydrive for uploading images to send, and (sadly) sound like they're going to try to re-introduce an email thread as a new concept. You can skip the video at the top of the page, there's not a lot of real content there, or at least shiny screenshots anyway, which is what I was wanting. The main site for the page is here which lets you see some more details of some of the new features.