It is rumored that the Apple Inc. (NASDAQ:AAPL) iPhone 6 will be launched on September 19th. Apple already sells 32GB and 64GB iPhones, but it does not have a 128GB version as of yet. Based on rumors coming out of China, a 128GB version of the iPhone is on the way. However, the 128GB version of the phone will only be available to the 5.5-inch iPhone 6. Apple is said to launch the iPhone 6 in two different sizes like the 4.7-inch model and a 5.5-inch model. Both of these models are expected to start production in July. It is unknown how much the 128GB will cost.