The cases seem to confirm a larger screen, tapered edges, a thinner design, with volume buttons in the same place as on the iPhone 4 but looking more like the iPhone 3GS volume controls, as well as a tapered, tear-drop like design.

Though we can't confirm that these cases are the genuine article, they do seem to tally with the best other evidence we have about the design of the next-generation iPhone. Hopefully we'll know for sure very soon.