This.Mustrum_Ridcully said:I think this also points out that the preview books are not a brochure or a commercial for D&D 4. It's extra material. It's the "Directors Commentary". You can't sell a commentary in hope of motivating people to see a movie or buy a DVD. But you can sell the commentary to people that are interested in the movie or DVD.
The designer notes, and the history of the edition's creation, is the interesting bit for me. The "Why we did this" and "How we did this" and "What we did that didn't work".
It's "Behind the scenes" of game creation.
And it's condensed into one place, rather than having to comb through half a dozen blogs, and a score of posts on each. Or keeping track of all the updates and all the hints, from the podcasts to the leaks.