Patently Apple's summary of Apple's patent filing:
Today's invention focuses on the flexible wraparound display that could be fashioned in aluminum, aluminum and glass or a fully transparent design. This future iPhone design won't have any physical buttons so controlling the audio on the iPhone will simply require you to hover your hand over the side of the display to temporarily illustrate the controls. The new design could also produce 3D visuals through its unique dual display design. This is certainly one of Apple's hottest inventions of the year.