You guys crack me up.
First off, Alibaba is not a retailer, it's a business-to-business marketplace. If you or I wanted to get into the iPod accessory business, and didn't want to do our own design, or commission one, such a site would be where we could find the goods from any number of small and medium-sized Chinese manufacturers to whose goods we could then either apply our own branding, or resell more cheaply as no-name items.
Secondly, one can't draw conclusions from illustrated sales photos with a cardboard insert, or minute details from a unlicensed design. There is a possibility that these cases do reflect the designs of a major accessory maker like Griffin who is probably privy to the new iPod designs, or they could just be no-name versions, or ripoffs of the same.
As with spy photos of new car models, one can take in the big picture to be indicative of what the future model may look like, but don't expect the details to survive.
It may spoil the fun, but don't take everything you see or read literally.