If you watch the video of the E9X test mule from back in the day you can clearly see a power dome. None of these current mules have any bump or hint of a bulge. I think the F80 will have a raised hood, different from the F30s but without a bulge. Again, using the F10 M5 as a design reference, I doubt there will be a power bulge. Using my same line of speculating, the F10 hasn't showed any signs of a cfrp roof so i tend to believe the F80 will also lack that option. We've seen M6 mules with camo on the roof indicating a possibility of the option but only time will tell.
Remember BMW invested a lot of money in CFRP and talked about implementing it on all their models. The question, now, is where.
2006 M3: Individual Blue Onyx on Black. MT
2010 135i: Crimson Red with Black interior.
2004 WRX: World Rally Blue. My track toy.