Thanks to marczellm; I had sort of reached the same conclusion based on a few posts I saw elsewhere, but it did seem to run contrary to statements on this forum a year or so ago about them being different development teams with no cross-pollination.
It's been a week since I've checked, but it looks like the new plug-outs aren't available as VST/AU plug-ins yet, and Roland said something to the effect that it's hard to do and takes them awhile with each new plug-out but that it is a goal for each one.
Dingwall ABI, Yamaha BB1025X, 60th P-Bass, Select J-Bass, Geddy Lee J-Bass
Eugenio Upright, Warmoth Fretless, Viking Bari
Yamaha WX5, Hammond XK1c, Moog Voyager, DSI Prophet12