"Sure looks like core code rewrite to me!" Well, all these seem to be features of FireFly, which AFAIK, was developed by Andrew Bryant of Pixels3D and ported for CL's use in Poser. I kind of doubt that improvements in that dept. are necessarily connected to Poser's core code. That's not to say they haven't done a rewrite of course.

"Democracy is a pathetic belief in the collective wisdom of individual ignorance." - H. L. Mencken