From what I have learned, the Pro-Pack should be able to work with 3D Studio R3 and R4, as well as VIZ-3. It will output a Poser mesh file that will better support professional level work. Exactly what all that will entail I don't know- but it sounds like they are all close to getting something out soon. It won't be "Poser 5", instead, features that will make Poser more a part of professional 3D software tools, including I think Lightwave too. This should help Poser on the high-end and also give Poser model makers a higher level standard to work with. Some of the new Poser models people are working on new have astonishing details...