In a recent post on EHLO it has been announced that Exchange 12 is now known as Exchange 2007. you can read the post here.
I have known about this for a little while (well since the Exchange 12 Ignite training tour) but being under NDA my lips were sealed.
Other news Monad is now known as Windows PowerShell
Take a look at other interesting naming new on Nathan Mercer's Blog post here