If Ferrari can get away with the splitter on the TdF, then I imagine the GP can have something similar although I'd bet good money it'll be toned down a lot from the concept - I'm thinking the daft extensions above the rear wheels for starters.
Also I doubt there'll be a manual option, just the way things are sadly to a confirmed luddite like me who enjoys using their left leg whilst driving. Very very few mass-market performance cars with a proper manual these days, seems consumers don't want them