Just came back form a California to Iowa and back trip. After the latest update, FSD refused to adjust to changes in speed limits, ran over lines on left side, doesn't stop when at all stop signs or red lights, will not speed up to posted speed, and warns to take control of the car when you turn...
In reality they may not make the extra battery, but may upgrade our current battery pack to give us the extra range and charge for the upgrade, less the deposit. I would be perfectly happy with that.