It has been listed here before, but I stumbled on this video which gives one a better look at some of the detail:
I need to look at it again, but the main thing I noticed, that I didn't see in other images was the side ducts at the rear bringing in air from behind the wheels and into the base drag zone.
It has the air turning deflecters on the front corners and a duct built in at edge of headlight housing to do the same, so giving the effect of a more rounded face I imagine.
The boat tail is short, but under european regulations it is not allowed at all, but they are hoping to get approval in the near future from changed legislation.