Spider-Man has been out for a week already, and WotC hasn't started Avatar previews yet. Should we be worried?

Has something happened at Wizards? I expected Avatar spoilers to begin two weeks ago, and we've heard nothing about this set. We even had MagicCon, but we didn't get a single mention of an Avatar card. Is the set canceled? How can I start speculative pre-ordering Avatar cards if we don't see them with enough time to really ratchet up the prices? What will this community talk about without a steady flood of new pieces of cardboard every day?

I'm really worried about the Wizards staff. Were they not able to pay their internet bill this month? Maybe there's a gas leak or something at their office? Did Hasbro decide they weren't profitable anymore? Has anyone checked?