PowerShell

I understand the reasoning, but I'm curious how it is going to pan out for organizations that are typically cheap on hardware. I love pushing 64-bit in general, so it is a good idea, but I'm curious if a lot of places are going to stick with Exchange 2003.

I guess we'll see how saturated the market is with 64-bit servers by the time Exchange 12 ships.
It seems like at least having the 32-bit version available would be a good idea.