The next-generation iPod touch will be upgrading to a 4-inch screen like the next iPhone, according to an Asian source for Macotakara. The same source suggests that the CPU and other specifications will otherwise be similar to the iPhone 4S -- which uses an A5 processor -- but that the back will be different from both the 4S and the fourth-gen Touch. Instead of glass, plastic, or polished metal, it will allegedly use "buffed" aluminum.
