Tesla’s new generation of superchargers already promises something similar for Model 3. Interestingly, you need to select supercharger in navigation system so it can condition the battery before arrival to get best charging time.
As I understand it, this change wraps the anodes in a conductive heater so the thermally efficient region is kept small, so it's potentially bad aspects are contained. It can heat up fast so is kind-of preconditioning, but perhaps less onerous.
