FWIW, I just asked BMW Canada about that because that sounded great to me as well, but what I was told was that the telematics in the convertible will be different, so, no, coupe purchasers will be SOL (even ones like me who are still going to be waiting a month or two for our cars).
As for pricing for updates, I was told that because the updates are dealer-installed, I should be speaking to my dealer about it, but it sounded like it was in the $250 (Canadian) range. I'm not surprised, but I always find it annoying to be dinged for more than the price of a new GPS for a simple map update.
