Navis Neptun & Spidernavy seem to be ahead of your thinking. A couple of years ago, I was advised that it was intended to re-start production but the rumour mill is now saying that conditions are not right at the moment to do that. Those of us who are interested in £D-printing would do well to remember that the majority of new models introduced by Navis Neptun and its associated brands during the last 10 years of production were produced from 3D-printed masters.