In very much the same style as its Ink case for the original iPad, Sumajin has released Ink Slim Case for iPhone 4 ($15), a rubber skin with an impressive amount of protection. As is generally expected, the glass back plate is fully covered, save for the camera/flash hole. Interestingly, that opening is much larger than on most cases, a change we have recently seen from a few different manufacturers at this point -- possibly a new Apple suggestion…
