Open Source Meadow?

In one of the recent blog posts is was mentioned that the Meadows design is going to be open sourced. Is that just hardware? or is that the .net runtime as well?

If things are open sourced how does Wilderness Labs make money? I assume something will be left closed source. I assume that will be the runtime? and that will be licensed?

I would also be curious about using a ESP32 instead of a SMT32F7