Wow... What happened to the rear spoiler?
It may still be there--note the absence of a third brake light elsewhere.
At the same time, this car seems to have a more pronounced ducktail spoiler than we've seen on the final ones in the configurator.
Early on we saw some mules with a bit of a bustle back; when I saw the spoiler I assumed those had been fake covers designed to obscure the spoiler. But I suppose it's possible that on some models the spoiler is fixed rather than moveable? We still haven't seen any final pics of the 70 (or even any confirmation that there *is* a 70), so that might be it.
Or this might just be a spoiler like you can get on the S, and you can't make out the active spoiler.
Compare, especially above the rear side marker light:
Edit: actually the more I look at it, the more I think that the more pronounced ducktail on the blue one is just a trick of light and perspective.