I am in a semi-similar thought process. Got my HW3 a few weeks ago. Did not get the email nor any sort of notice. I has a faulty door handle. After scheduling an appointment, I added " HW3 Update ( as I had done numerous times before), got a call a few minutes later to state that my VIN is up for the upgrade. Got a number of subsequent cancellations partly due to COVID.
Finally got tired of waiting therefore asked them to fix the door and install HW3. MCU 2 was not available and that what was holding everything up.
So far I am enjoying the HW3 after waiting for many moons albeit with MCU1.
2 days ago got communication that my infotainment is available, appointment scheduled. Should I go ahead with this upgrade or not?
Maybe the NTSB investigation may amount to a discount of the $2500 ( quite a lot of change there)...