If you don’t get enough Microsoft Entourage information from the usual sources, I count that as a personal failing on my part. Just kidding. But still … you’ll probably want to check out Amir's Exchange Clients Blog. There, Amir “is focussed [sic] on Entourage only in the role of being a client to Exchange Server and Outlook Anywhere (RPC over HTTP) Feature.”
[Via Richard.]