I immediately notice a couple of new improvements here. First it addresses the current issue of possible reassembling the brake pistons incorrectly there is a front and a back and they are not interchangeable even though they "fit" they do not "work" interchangeable and it is hard to distinguish, and diagnose.
The more interesting is the disc braking will be controlled by wire with this setup like the throttle, if I understand it correctly it senses if in 2WD or 4WD and react accordingly. It is not ABS, but it does seem to be able to sense the traction and apply braking pressure accordingly. Could be an interesting evolution for SXS brakes.