Apple might switch to 9-pin dock connector, iOS 6 beta reveals

Something that all iPhone 5 rumors agree on is that the smartphone's next iteration will have a smaller dock connector. What that will look like and how it will connect to the device, however, is not exactly clear. Some sources claim that a redesigned 19-pin connector will be used, while others point at a possible 8-pin interface. Yet now it seems that neither of these speculations got the magic number right.
Of course, the interpretation of that code string could be wrong, but at the end of the day, it doesn't really matter how many pins the new connector will have. What's more important is that the port and connector are most likely getting smaller, which will free up precious space inside the device itself. That should make hardware engineers more than happy as they'll be able to stuff more circuitry inside the smartphone – think new chips, antennas, and the likes.
source: 9to5Mac

iOS 6 beta code appears to contain a reference to a 9-pin dock connector