In addition, Apple may use the latest quad-core PowerVR SGX554MP4 chip for its GPU, similar to those found in the iPad 4. Currently, the iPhone 5 is equipped with a triple core PowerVR SGX543MP3.
Apple will still make use of the resolution of the iPhone 5S as one of the selling points. The iPhone 5S retina display is likely to remain at a resolution of 1136 x 640 pixels. Of course, iOS7 will probably be announced together with iPhone 5S. There is still no new or rumours on the iPhone 5S battery or camera specifications at this time.