It was hardly predicted that James and Jessi would take over.  Rather it was hoped that they would be sufficiently developed to be viable alternatives to unimesh.  While they are useful and interesting characters, they do not have nearly the same level of innovation.

As irritated as I have been with the unimesh, it has been a rather novel and innovative development in the poser world.  From Dan's chat, it was mentioned that V4 will have high and low res versions, a V3 clothing fit, new hands, feet, & muscle groups.