More news on Longorn from Paul Thurrott
Paul Thurrott just published an article with information about Longhorn Server.
All the features of the Longhorn client will of course be there, with the except of Aero, the new user interface. Some of the keywords of interest are application publishing, network quarantine, ISS 7.0, hot-patching and image-based setup and deployment tools.
Whether it ships with WinFS or not is unconfirmed. It's current expected release date is early 2007.