While I don’t know if there’s more information elsewhere there appears to be a document and 3d model (STL) available that give a description of placement and orientation of the magnets. (Keep in mind is that the STL file actually contains 2 separate objects, so 3D printing as-is may not work.)
And while the PDF information is for the Innovators Overlay, if you can identify which of the locations on the Morph contain magnets for retaining the overlay, then it’d be safe to say that the remaining magnet positions are for encoding the overlay’s ID.