We'll have months of rumors before we find out what the next iPhone will be. And the latest is, again, that the phone will have a 4-inch screen and that it may be coning out in the summer. 9To5Mac says that they got their information from someone inside Foxconn, the Chinese company that manufactures the iPhone. And they say that the same source was accurate last summer, when he said that an iPhone 4S was in the works and that a new form factor wouldn't appear until 2012.