Almost everything that the iOSphere thinks it knows about the iPhone 6 – expected to be announced Sept. 9 -- is based on Apple’s past history. So, everyone “knows” the iPhone 6 will have a new processor, the A8. The reason is because every new iPhone except the 3g has had a new processor. Almost everyone is convinced Apple will make the iPhone body look more like the iPad body: rounded instead of flat sides. But beyond that, it’s all up in the air. Here are the Big Unknowns about how today’s iPhone might change.