Its not a 'preview of a preview' its a preview of an article. The article has nothing to do with the contents of the game, but the development process behind it. Their previous "final hours of" arcticles have been excellent.
Oh and they arent unlocking until 16th because of the contract between Valve and VU. There have been 0 legitimate sales so far. Retailers have been told not to release it before the 16th, if they break the date, its not legit.