Depends what you mean by support. The V3 cabinets are what feed the Semi Megachargers and the DC Bus Link voltage of 880-1000V is a strong indicator that the hardware can output 1000V.What I want to know is do any of these V4 stations support 800v charging? (I know the pedestal supports it, but I don't know if the actual charger does yet.)
Whether it's enabled is a different issue.