IMHO it is a matter of business plan. DAZ has decided not to support Poser 5, and has begun to develop DAZ studio as a beefed up Poser 4 (better lights, better morph management, better library management, improved materials, weight mapping, but no magnets, no dynamic clothes or hair, no shaders in the basic version). They probably acquired Bryce so that DAZ Studio + Bryce can compete with Poser 5 + Vue d'Esprit. Only the future will tell if one of this packs gets the upper hand, or if the market will split. As for the moment, I wouldn't count on DAZ to make content making use of Poser 5's advanced possibilities.