Thought the board might enjoy my experience w/ the HW3 upgrade.
Purchased my M3 AWD 11/2018.
I had not received a notification but thought I would try and schedule a visit for HW3 with my local Tesla dealer, fully expecting to get turned down.
I used the service scheduling function in the Tesla phone app. Under the section Accessories is an option for 'Upgrades & installations'. I also free-texted that I needed to upgrade to HW3. Within 12hrs I received confirmation of the appointment and the reason was changed to 'hardware retrofit'
When I came in I was told that it would take 24hrs and was given a model S loaner. (I like my M3 better). Within 3 hrs I received notification that the car was ready for pickup.
As I was driving off the lot my visualizations had changed. I lost autopilot and autosteer. I pulled over and did a cold reboot w/o change. Next I enabled 'full self drive visualization-beta' in the autopilot section. Still no change. 30' after leaving the dealer a pop up message said the 'camera calibration' had completed. Bingo! now I had the traffic light, stop sign, cones and trash can visualization. Pretty cool.
I think they are getting better. 3 hrs soup to nuts. They may be getting close to mobile installs.