Ok so the original tweet is in Chinese. The fact that the tweet uses the word "concept" makes me think fake. How would some random Chinese person have access to a phone with iOS 7 beta on it?
I guess we are supposed to believe that iPhones are in production with this software already and they smuggled the info out of Foxconn etc
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Apple isn't going that flat. Their will still be gradients.
Or there won't be.