And no this is not some kind of Friday joke it's true! If you don't believe it you read Terry's post here.
I've been running the escrow build, which is more or less identical to the final RTM, in my environment for a while now and I'm upgrading to the final RTM as I'm posting this.
You cannot download the RTM bits just yet, but they should be available later today. So whwer did you get them from then? I hear some of you grumble. I got them via the Exchange 2007 Rapid Deployment Program (RDP).