Is Verizon Nokia Lumia 920 with 42 Megapixel pureview camera being tested?
I was surprised to learn that the 808 is only 3.2mm thicker than the 920.
It's conceivable that an aluminum case will allow a mm or 2 of more space inside. Also, they have had time to work on their sensor and its packaging (reducing its thickness) and their optics (reducing the distance required between lens and sensor). Hey, they could give up wireless charging in favor of a better camera, too.