I just checked the store configurator and there is no option to upgrade the Pro with M1 to 32, which is consistent with the presentation.

Intel's MacBook Pro 13" is still available for purchase with 32GB upgrade. The M1 is capped at 16GB.

edit: spelling

The M1 MacBook Pro starts with 8GB and has an option for 16GB. I was talking about the Mac mini which in the Intel version has an option for 64GB (at +$1000 it's not exactly cheap).

The 2 lower machines on the selection page are intel ones, and are the only ones with 32Gb option

I don't see that.

You might have looked at the 16" one, which did not get updated today.