According to Goldman Sachs Group Inc. analyst Robert Chen quoted by Bloomberg, the future iPhone 4G, to be released in May-June, could have an interesting new feature. Based on the technology developed for the Magic Mouse, the back of the iPhone 4G may offer touch-sensitive features. This could be used to control the audio volume and many other functions that msot likely Apple will think about.This is also exciting as it would give Apple a new leadership position when comparing the new iPhone with other recent moels.