May have to check this out. Mine is a March 26th 2012 build, about 900 miles so far. Most of the Hard shifts are from 2nd to 3rd gear. Really hard jerk, the whole car shakes. Getting really pissed considering I would have though this later build would have been immune to this shifting.
I still think it has to do with the computer not adapting from highway driving right on to stop and go (that is when most of the hard shifts happen in D, S or manual mode). Maybe this lastest TSB is a fix?
How do I go about bringing this up to the dealer. Do I just walk in to the service and ask to update the software?