Exchange 2007 RTM'd (Released to Manufacturing) today in Redmond. After the last of the streamers and empty Starbucks cups are swept up from the party the task of supprting it begins. You can get all kinds of info about Exchange 2007 here but let me point out before you start...it's only going to run on 64-bit Windows. If you're considering an upgrade to Exchange 2007 (and a lot of our clients are) don't think you're just going to toss it on that old 32-bit Server you've been running Exchange 2003 on. Won't work.
That's part of the reason why we don't spec 32-bit servers anymore anyhow -- within 12-18 months I think all new server products will be 64-bit optimized if not require it.
-B-