For those that want to see what is going on in the server side check out the beta 3 release. It is available here: Longhorn Beta 3
What is odd is that new releases like OCS 2007 haven't been platform tested against Longhorn yet even though beta 3 is an overkill for Longhorn. I haven't been hearing the sort of buzz about Longhorn as I have about Exchange 2007, Vista and Office 2007 - I guess server OS features just aren't that exciting to talk about anymore? With any luck they will get Longhorm out to an RC and RTM prior to the end of the year - then all the IT Pro's can spend their holiday season installing a new server OS!