I say no to P4 becoming extinct. the lack of export of advanced features in p5 (hair) mean that to most 3D artists that use Poser as an addon, not their main program, it's not that much of a step up. having setup scenes in Poser and my native trueSpace, I gotta favour tS all the way. Example - my Poser scene 'Spacewolf Ambush', (in my gallery), was a BITCH to setup in Poser. to zoom out enough to pose the Predator on the roof took a lot of pawing on the mouse! a full 5 mins of swearing, begging and thinking of abandoning the scene all together.. then Clint released the Luuv TSX for tS.. I now only use Poser to setup a figure to transfer to tS. Much much easier to navigate a scene there, plus the effects that not even Poser 5 can do... (Particles, Volumetrics, Lensflares etc) just my opinion Kai