Yes the ZM 15 and 85 are made in Germany but is not clear to me whether Zeiss make all the glass and Cosina make the barrels and assemble them or whether cosina also make the glass for the other lenses.

I just found some more info on the zeiss web site which basically says Consina already the facilities to bring the camera to market quickly which I think is the Zeiss way of saying they didn't want to invest in their own manufacturing plant for camera bodies.