I heard back from Zavvi because my pre-order is still listed on the site as "order placed." Not only did they send all of these out in jiffy bags, but evidently they also went ahead and released this one as scheduled without having enough stock to fulfill all of the pre-orders because they wrote me that they are "still waiting stock and once we have some more, it should be shipped out to you."
It seems I'll be getting part of my original order when some of you are getting your replacements - so I won't get it here in the US until probably October at this point. I'm not bent out of shape about it but maybe they should have just pushed back the release date if they didn't even have enough copies to fulfill every pre-order (and setting aside the entire jiffy bag issue on top of it). For those who missed out, though, hopefully that means there will eventually be more available to purchase at some point.