I SOOOO hope not!
As it is, the current Nano rightly deserves criticism for aping the Nokia Lumia.
And it's not a nice look. At all.
Keep the dimensions, make it larger, and thin the bezel.
Anodize the aluminum, sure. That's nice.
I hope that's the ONLY thing that is similar to the current Nano.
The round icons - yuck. the Nokia Lumia look - yuck.
Current 5S - nice! Just refine it further.