Just wanted to give everyone a heads up. I (finally) got scheduled for the HW3 retrofit on my 2018 Model S. I had tried previously and were told that the SC's didn't have the parts yet. I made a service request for "Accessory Installation & Upgrades" Title was "HW 2.5 to HW 3.0 retrofit" attempted to schedule mobile service and I got a text saying: Hi Ryan, We are able to upgrade your AP hardware at this time but the vehicle needs to come into the service center. So I setup an appt at the Scottsdale location for next Friday. Been following this process for awhile and looks like they are going off VIN serial #'s ( mine is 77XXX) im also on AP2 w/FSD and HW2.5 so if anyone with a serial around mine wants the retrofit and paid for FSD, you may be in luck.