Analyst Shaw Wu has stated that supply chain checks indicate signs of new form factor iPhones under development, including both larger and smaller touchscreens than the iPhone 4ís current 3.5-inch screen size. According to Kaufman Bros sources, the new models could be both a new high-end addition and a new low-end model. While noting that Apple traditionally ships new iPhone models on an annual cycle, Wu speculates that the models under development could ship much sooner.
