But the Tesla v4 chargers have already been announced and also charge at around 450 kw plus upgrading a charging station is way easier/cheaper than installing from scratch. In addition charge speed is less and less important as most people trickle overnight at home and anything over 150 kw is pretty good on a longer trip. This is really not a breakthrough.

The only problem is after 40 fast charges your battery will be halfdead . Full speed charging degrades a battery quickly.

 They still haven't solve the RV towing problems.

Misleading.  It's not the charger that determines range or charging speed.  It's all determined by the car.

The claims here would be like claiming that a lightbulb is brighter when plugged into a 20 amp outlet versus a 15 amp outlet.  That's not how electricity works.  The power rating is the capacity, not the output.

480 kw is irrelevant until an EV exists that can use that much power.  No EV yet exists that can even fully utilize existing 350 kw chargers.  Tesla V3 chargers max out at 250 kw because Tesla matches their chargers to their cars.

Tesla's planned V4 chargers will be 350kw because their Cybertruck can charge at that power level.