In the first image it can be seen the "bridges" from one side of brake caliper to the other (silver metal surround that series of holes) the brake disc periphery with small bore multiple holes to vent, also the brake pad next to that (the division clear from the line between the two) also having holes in larger bore to flow cooling air through the pad material.
In third image, can be seen just how far that top knuckle joint for upper rear wishbone location is outboard from chassis centre and far into the wheel that will surround it. Looks more or less central to tyre width in location, with that link going to the rear wing pylon location chassis side, it will provide the longest possible link length in optimisation of wheel geometry "curve" and desirable to control better the suspension travel dynamic involved there.
There's some very adventurous thinking in this chassis (as expected) which looks to give positive potential in this rules set.
We've not been able to see clear hard performance, yet. It looks like there's going to be a lot more to arrive when some of the headline fundamental issues are resolved.