Something I've noticed.
It looks like the new mini dock has no inside and the cable has the contact points on the outside. Just looking at the pictures, it looks like the new cable can be connected to the new mini dock in any orientation, backwards/forwards.
This is useful in connecting the cable in the dark or blindly.
Another theory I have is that the connector is magnetic to assist in the connection and keeping it in place. It doesn't look like the new cable has the extra protrusions to click into the dock like the current one does.
It looks like the new mini dock has no inside and the cable has the contact points on the outside. Just looking at the pictures, it looks like the new cable can be connected to the new mini dock in any orientation, backwards/forwards.
This is useful in connecting the cable in the dark or blindly.


Another theory I have is that the connector is magnetic to assist in the connection and keeping it in place. It doesn't look like the new cable has the extra protrusions to click into the dock like the current one does.