Next-generation iPhones likely to focus on internal improvements.
A Chinese Counterfeit of the Unreleased 4th Generation iPhone
Based on the numerous leaks, the real Chinese counterfeiters have had time to ramp up their efforts and create this 4th generation iPhone clone. This one's officially called "GPS-PHONE" accoding to PCOnline.com.cn and offers a number of features including a front facing camera, a TV antenna, mini USB interface, and camera flash.
The device even comes with its own iPhone-like interface and supports installation of Java apps.
For reference, images of the actual iPhone prototype can be found here.