Got a source for that information?
This is what was on the flyer that came with the Store Championships kit we just ran this weekend...
After a lot of stores complained, FFG followed that up with an e-mail that (IIRC) reduced the number of Swiss rounds by 1 for each bracket after the first.
EDIT: Not meaning to imply that an e-mail is a good way to handle something like this, or that you're at fault for not seeing the e-mail.
Well, that helps...I guess. IMHO, another round could have been knocked off, though. But I'd just as soon run 6 Swiss vs even 4 Swiss and 3 Elimination.
Although 6 double-elimination could work, too. (Although the biggest problem with any of the 'elimination' rounds has been noted already - you end up with the store accommodating a final round, possibly staying open unusually late and some cost to the business, for only a handful of players remaining. I can't see how that is in anyone's interest.)