Other than "bigger", that's the same case design they have now.
While I like it, I also think Apple will do something fresh with the look, as they did between 4S & 5.
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Actually, I was fine with the 4/4S look, and didn't really appreciate the move from sturdy brushed steel to delicate aluminum.
In both, the slippery sides leads to ease of dropping the phone.
I vote for light nurling* half way up the sides.
You might have to occasionally clean it with a toothbrush, but it wouldn't slip out of your fingers!
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* knurl or nurl
Verb: to impress with a series of fine ridges or serrations.
Noun: a small ridge, especially one of a series providing a rough surface that can be gripped.
(Ask any old machinist!)
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