I think it's a case that is over the actual iPhone 5, made to look like a 3GS. (like they had done with the iPhone 4) that's why it would look like a slim 3GS. Even tho it's blurry I don't see the headphone jack on the right side (left side when looking at the device) where it would be on a 3GS or ip4. And the "leaked" case design shows the headphone jack on the other opposite side.
It looks like there is a some type of hole or something there on top of the device maybe the micro sim enters on top?
I bet it's just apple messing with us on all of this.
It looks like there is a some type of hole or something there on top of the device maybe the micro sim enters on top?
I bet it's just apple messing with us on all of this.