And V4 superchargers are expected to support up to 1000V at 1000A - a good, solid MegaWatt. And with all the pedestals and high-voltage AC electric connections already in place, upgrading a V3 supercharger installation of say 8 chargers is probably an afternoon's worth of work.
What's that again about an obsolete standard?
And, by the way, there is no charging standard "CCS" - there's CCS1 in North America, and CCS2 in Europe, and the two are incompatible. So it's a bit disingenuous to decry North America using a different standard than Europe, because that was going to happen in the CCSx future anyway. It's just that we'll get the sexy, slim, easy-to-use connector and Europe is gonna be stuck with the CCS2 monstrosity because of early standardization (and why didn't Europe settle on the existing ChaDeMo conector anyway?).