Right, and the resistive heaters take a new form:
It does not have a high voltage PTC heater like the X, S, and 3.
It uses the HV windings in the compressor as a resistive heater.
It can also use (based on the patent) the compressor electronics themselves to make heat.
It has dual low voltage resistive heated in the cabin for supplemental heat and driver/ passenger differential temperature.
It can use the HVAC blower windings as a low voltage resistive heater.
So the only purely resistive heaters are the two LV ones, everything else is components doing double duty.