The interior design shown is some godawful BMW Individual scheme concept.
"Bad Acid Trip" I believe would be an appropriate name for that interior choice. Some sorta ridiculous 70's western braided crap.
Peel off that crap, and you'll see the F30 interior more or less exactly.
I would expect the sheet metal to be pretty much the finished work. I would expect reworking of the lower fascia front and rear to something closer to what they've shown on the F30's already (though probably updated lines and more aggressive), plus some sub-20" wheels.
And probably taller mirrors.
Not sure if those door handles will survive to production, sadly.