http://www.bethblog.com/2012/09/13/now-available-revised-expanded-skyrim-game-guide/

Why would they launch this now? Are they done with DLC?

Or, it could be that the upcoming DLC's are large enough to require their own guide.

It's been done before, http://www.amazon.com/Elder-Scrolls-IV-Shivering-Expansion/dp/0761555498

they probably will release separate strategy guide for a future big expansion pack (they did that with oblivion, Shivering isles expansion had its own separate strategy guide)

Maybe ...... Interesting!