"So I guess the answer is Daz is not longer supporting Poser except via dson"

PA's get to choose how and which programs they support for their own work just like at other brokerages. I think DAZ requires both programs to be supported, where possible, for products that they buy but they leave it up to the content creator as to how that is done as far as I know. Pretty sure there are quite a few PA's who still do all the poser versions first and then simply add surface settings for studio after.

www.Calida3d.com
Daz studio and Poser content creators