https://www.cnet.com/roadshow/news/electrify-america-350-kw-...
https://insideevs.com/news/341596/evgo-launches-350-kw-ultra...
And in Europe Fastned and Ionity are also installing 350 kW chargers:
https://www.cnet.com/roadshow/news/ionity-launches-first-350...
https://fastned.nl/en/blog/post/fastned-opens-its-first-350k...