[mevensen]

Originally Posted by hobey19 according the MS's KB, its a for sure. note the versions of vista it applies to at the bottom (cliffnotes: all of upgrades available do not support upgrade) http://support.microsoft.com/default...b/930985/en-us craig

Actually, both this article and the Ars article leave out the Vista Ultimate upgrade in their listings. I wonder if this is oversight, or another "perk" for purchasers of the Ultimate version.