Not sure how this has anything to do with the new drivetrain, because last month they already announced "[a V3 supercharger] supports peak rates of up to 250kW per car" (presumably without the new drivetrain as it had not been announced yet - https://www.tesla.com/blog/introducing-v3-supercharging)
Also why did Tesla claimed 250 kW in the blog post last month, but now lowered their figure to 200 kW ? I'm so confused.
Edit: found some answers: "Model 3s will be able to take full advantage of the new Supercharger capacity [250 kW] thanks to the car’s newer battery chemistry". So the Model 3 can charge at up to 250 kW, while Model S and X are currently limited to 200 kW. Source: https://www.theverge.com/2019/3/6/18253618/tesla-supercharge...