Apple recently applied for a patent for "movement-based interfaces for personal media devices," which means a more advanced accelerometer and movement gestures for the iPhone.
Given Apple's focus on videoconferencing with iChat AV, I always found strange that there wasn't a front camera in the iPhone. Looking at their gigantic iPhone patent, it may be coming in the next generation:
The US Patent and Trademark Office has published today a 372-page document detailing every known and unknown aspect of the iPhone. As you can imagine, the most interesting bits of patent 20080122796 are the features never detailed before—like video conference, GPS, widget creator, multimedia messaging, and video…