No doubt Tesla SC’s aren’t always the first to know but in my case, I was told that the model 3’s already have the location and bracket or housing for the PWS speaker so they just need to install the speaker and bottom plate of the car with the perforations to allow sound out. Maybe someone without it can take off that bottom cover to confirm but thought i read somewhere it had already been confirmed. That obviously has no bearing on original model S or original roadster but just the newer built model 3’s that came with the “rough in” for this already. Mine was July 2019 delivered so guessing I would have all this ready to go.