For what it's worth, instead of waiting any longer for the AP3 hardware install I just went ahead and scheduled both of our Model Xs in the app last December for the AP3 install in conjunction with the yellow screen fix. At the time our configuration was a 2017 Model X 100D, MCU1, AP2.5, FSD, and a 2018 MX 100D, MCU2, AP2.5, FSD. Within the hour, they confirmed the appointment at our local SC for the 2018 model and cancelled the appointment for our 2017 model. Had the AP3 install completed that month for the 2018. The excuse for the 2017 cancellation was that the hardware for my VIN wasn't available yet. Of course, that's because the software isn't available yet for MCU1 cars. Fast forward to the MCU2 "infotainment" upgrade availability. I once again, without an invite, scheduled the MCU2 upgrade in conjunction with the AP3 install for my 2017. They came right back with an appointment that week. Had it completed last Friday and works fine. The yellow screen fix of course became a non-issue since they replaced both of the displays as part of the MCU upgrade. As stated, it doesn't have FM radio, but I haven't listened to AM/FM for more than a decade anyway. Although FSD is not really here yet, it does feel to me as though the AP3 autopilot is a little smoother. Might be my imagination though!