In terms of what can be gleaned from the design of the covers, it seems that some of the covers have cutouts for a single camera, while other covers have cutouts for what appears to be a dual camera setup. Presumably the dual camera setup could be for the Galaxy S9+, which is what companies like Apple have done.
Other than that, it’s hard to make out the design of the phone just from its cover alone. It has also been noted that it looks like Samsung is bringing back the Clearview Standing Cover which was originally launched with the Galaxy Note 7, and eventually found its way onto the Galaxy S8 as well, so if anything it looks like Samsung is being pretty consistent.
Some of the cases also comes with a built-in NFC chip in them, which means that they’ll double as more than just a case and will also sport some kind of functionality. No word on pricing but we doubt it’ll stray too far from its regular price.