So I went into my FLGS to pick up the Dark Sun Campaign Setting and the Creature Catalog. I was surprised to see how cheap the Creature Catalog was. The store owner pointed it out to me and I'd mentioned that I'd seen that originally it was supposed to be a softcover.
Turns out that STILL was what it was supposed to be.
However, the printer made an error in the order and printed it in hardcover instead of softcover (obviously they'd gotten used to everything being a hardcover). Apparently Wizards of the Coast had paid for it to be softcover, so they just sent it along as is.
So those of us who get the first printing will be lucky to take advantage of a printer error.
Now I'm going to sit down and start devouring those books. :-)