Well spotted!
I was wondering the same thing about friction. A magnet seems like a more likely scenario. The intelligent 2 x 8 connection is also an interesting concept. Has that been done before?
I am not aware if it has been done before, but certainly technically feasible. Second, I did notice on a picture here:
http://www.engadget.com/2012/08/10/next-iphone-tiny-docking-connector-possibly-spotted/
That the side of the connector has an indentation that would be a friction point. This does not mean that it still could not be magnetic. I think that the generic feedback regarding orientation of the adapter had to be to make it omnidirectional. I also dont see 8 pins alone, so I think 16 omnidirectional makes more sense. We will see.