A couple of new model photos of the rumored iPhone 6 have been posted to Twitter by . The new images depict the 4.7" and 5.5" iPhone 6 side by side -- both front and back. The images show what we have already seen about the , including the rounded case edges and larger form factors. Apple is expected to release the 4.7-inch iPhone 6 around September of 2014, while the 5.5-inch version may come later. Photos of iPhone 6 dummy models have been floating around for months, making even more in recent weeks.