@Korina cool !
As an iOS developper myself, I'm using this App Store feature for some of my apps.
App Store Connect > My Apps > Windy > Pricing and Availability
There, if you scroll down a bit you can enable availability for M1 macs without having to release an actual MacOS version.
But I believe it was enabled by default when the M1 chip was introduced. You guys probably have a very good reason not to enable it (as I have for one of my apps).
Anyway, it's a good way to have a MacOS presence while the MacOS version is being developed...