The Baltimore Sun today found an Apple Patent on a device that would integrate a media player into a wireless headset. While only shown in one of the images, the display does show up in some of the diagrams and in the application itself. (marked "214" below)
11. The wireless headset of claim 9 wherein said display comprises a video screen.
35. The wireless headset of claim 34 wherein said display comprises a video screen.
The device itself isn’t just a set of headphones, it also incompases a media player and could be considered an "iPod", perhaps a successor to the Shuffle. Would you buy something like this? Drawings below: