I had the MCU upgraded yesterday at a SoCal SC. I was told at the time of the appointment they had all of the parts including the new center screen. I was offered a discount to keep my old screen which I declined. The Tesla employee noted the account and said the car should be ready by the end of the day. I paid the final invoice of $2500 plus tax and picked the car up after hours. This morning I looked more carefully at the screen and the original screen is still there. I Know this because I had a tempered glass screen protector which I had put on slightly crooked and it was still there. I wanted to verify before I call them that indeed the center screen is the screen that is replaced in the MCU1 to MCU2 upgrade and not the cluster above the steering wheel.