Shouldn't we start seeing 5.5 start popping up soon? I mean they are delivering EU cars with the firmware and if its good enough for the new Tesla owner then it ought to be good enough for the seasoned veteran. If anything, I would have thought 5.5 would be rolled out to US customers first as a sort of final beta test. I figure it's better to have someone experienced with the car deal with software issues than it is for someone who is sitting behind the wheel for the first time.