The geometry nodes demo in the release video looks extremely cool! To clarify, that is a node-graph procedurally generated house with adjustable properties (decay, etc)? I know that's been a thing for a while (speed tree, etc) but it's really impressive.
You are correct! Here is the forum post where the creator shared their work [0]. There is a nice breakdown of the different layers with a base structure, then many layers of procedural nodes.