I scheduled my infotainment update in late June for the end of July. A week or so later, I bumped up my appoint by a week (to this past Friday). Dropped it off Friday morning, picked it up Saturday morning. Never had an issue with parts being available. I'm in the San Fernando Valley north of Los Angeles.
My only issues are the blank theater app (tried language and Monty Python, neither worked so I'll do the Reset this evening) and my walk up, present handles stopped working. I'm hoping both are resolved with the Reset.
100% recommend this update for anyone that's on the fence!
OH! And my backup camera seems to not be affected. Not sure if this has been discussed elsewhere, but I know that was a problem for a long time (upgrade resulted in dark backup camera). Mine is working as expected so maybe they fixed that issue.