I just called sales in Fremont about this problem. The lady clarified that the FSD is $3K, while EAP for those who didn't purchase it with the car, is $2K. I was under the impression from Musk's Tweets that FSD would be $2k, but that is apparently not the case.
I then ask her to assure me that paying for the upgrade does entitle me to the MCU3 at no extra charge. She left the phone, spoke with a supervisor, and then told me that they will, at no extra charge, remove the display and replace the "AI chip with the new HW3 AI chip." I was under the impression that they had a way to swap out the entire computer for the new one. That would mean that I'd get an Intel CPU rather than the nVidia-based one I have with MCU2. She told me that they will not be replacing the MCU but merely swapping out the old AI chip for the new HW3 AI chip. I asked if the car would be classified as "HW3" after that swap, and she said "yes," but it should be noted that she did not get that from a supervisor. I think that one came off the top of her head.
I'd deduce that this means that the hardware upgrade will be simpler, faster, and less expensive for Tesla than some of us originally anticipated. However, I'd still love to know where this would leave those of us who now have HW2 after that AI chip upgrade? Sentry Mode and dashcam? Would FSD truly be equal in quality and safety to the FSD in HW2.5 or HW3 cars with intel-based MCUs?