Well, so far it's quite nice what they have been showing.
But I'd prefer some of the weaker points of the program to be vastly
improved or at least reworked :

1. Hair : needs to look more realistic,needs far better handling (see shave&haircut plugin, for example)
2. Cloth simulation : faster, better collision and interaction with hair and forces
3. Face Editor must work for all figures, not just judy and don.
4. More Content 'out of the box' : a real super model figure with enough clothes and hairstyles! (i
   know not very realistic ; but Judy is really ugly.)
5. Material System needs to be improved.
6. I suspect the walk designer will remain largly useless even in Poser 6.

So far what I have seen were mainly improvements in rendering and interface : so we got finally
Opengl; even old Bryce had that for ages.

If it turns out that Poser 6 will only make some cosmetic changes, I really have to think twice
about purchasing.

Just my 2 cents.