I'm really liking the design if this is it:
A very impressively machined and built piece of metal. The SIM cardholder fits so exactly, and all the little screws and bits inside really makes me think it's not a fake. Or if a "fake" it's some prototype from a short-list of possible designs built by Apple. I'm sure they build a variety of shapes and sizes to try.
But then we were all convinced last year's iPhone update would be wider and flatter.