Well I've had my S for over 2yrs now. I was picking it up from service. But better late than never, right? Anyway, I talked to a couple of people regarding the Alcantara issue. One person explained to me that they had a supplier that stopped talking to them (Tesla) after about 2,000 vehicles. So this is the material they are putting in the car now.
I have confirmed through another person there that I do have the Alcantara and when I pressed him to show me a 3 with the new interior, he walked me up to the car that was Supercharging and showed me through the window. When I peered through the rear window you can clearly see some type of weave pattern in the material. Was hoping I was able to take a picture from inside the car but didn't find a 3 with an owner nearby. I guess Tesla has strict policy against letting other people in other people's car.
This car had VIN 3xxx. I guess now I should feel lucky that I got a lower VIN.