Thanks for the feedback. I'm pretty sure it did when I picked it up. Surely they wouldn't turn off hardware with the first software update?
You are pretty sure the button was there on the screen or you are pretty sure that you turned it on and confirmed the rear seats got warm? It's theoretically possible that SR+ really has the heating mechanism in the rear seats and it's turned off through software only but that seems like a crazy way to reduce the price of the car. So far nobody has attempted to take the rear seats apart to confirm or deny.
I agree. But I think I remember seeing the option in my car last week (it wasn't needed). Perhaps I remember seeing it in the test drive car. Either way, it's an example of how the delivery and hand off of the different models can be improved. That being said, I'm very happy with the car!