There was a conversation on Reddit about this and here is the way I understand that.
Right now, you can only buy the 3 with Long Range and the PUP, so premium black seats.
Come Fall, you will have three choices, because you can then choose to not get the PUP. The options being:
- Standard, textile black seats
- Buy PUP, choose premium black seats
- Buy PUP, choose premium white seats
I don't believe there will be an additional cost to choose white premium seats. Look at the S options. Premium seats are not included in the PUP, but if you choose them, you can choose your color at no extra cost, I don't see any reason for it to be different in the 3.