Is it OS upgrade time for you?

Microsoft is releasing its new operating system, Vista. A version will likely be in the next computer you buy. But hang on, there will be no less than seven versions of Vista available!
Admittedly, three of these are enterprise class, aimed at business users, but that still leaves four versions to choose from when either upgrading or buying your new computer! This article at Ars Technica helps explain the options...
So how many of you are planning to upgrade to Vista this year?