Much improved preview version, including the following changes:
proper ghosts when placing buildings
building mode / selection panels interaction improved
peasants are assigned to constructions and their availability is checked
not yet implemented buildings are now disabled
pop-up info for buildings including their construction costs
support for macOS Catalina and up (64 bit macOS)
Preview-Release
This is a Preview-Release of the single-player re-write. There is no gameplay yet. A single map where you can build some buildings (most buttons simply build a hut, but house, wall, palisade, tower and chicken pen already work).
Don't expect much. Wait for the next version unless you really, really can't wait. But yes, it's coming.