User blog comment:TESClaymore/Skyrim Answers from Bethesda/@comment-3097746-20110831120104/@comment-4317122-20110831121506

They didn’t necessarily say that the perks they were listing were in the same order that the game uses. Plus, the perks in the game that have been shown are branched off to "first" perk, instead of being using a linear path. So, until the game or some really good video is released, we won’t know the proper “order” of the perks.