Although I have loved the concept of skill challenges, up to now, I am unfortunately a bit disappointed in the preview. The "overview" portion said nothing new (besides the fact that we have a "CHAPTER" devoted to skill challenges; yay!), and the example was a lot more constraining than peoples' experiences.
I am hoping that the "choose your skill, roleplay your action, roll check, DM adjudicates" is still a primary method in skill challenges.
With that said...
I like some of the mechanics introduced in the "Template." I like the idea of having particular skills cause automatic failures, when used sparingly, and when used in conjunction with the DC spectrum (easy, moderate, hard). I like successful skills "opening up" other skills. From a DM perspective.
For instance, if the DM makes sure when presenting this noble NPC as one unswayed by intimidation, it would make sense for the use of Intimidate to result in an automatic failure. (Just as if you had a challenge where an NPC is portrayed as extremely urbanized: a Nature check should also result in failure).
Or, when a character has a successful Diplomacy check, the DM can then roleplay the NPC as having an obviously link with the History skill - perhaps this is a hint of the "free skill check when succeeding on a Hard DC?
Anyway, my appetite was whetted a long time ago, and the Skill Challenges CHAPTER will be the first page to which I turn when I get my hands on the books.