I personally think it`s a bit of cheek charging for this upgrade. I have Carrara 4 Pro with Transposer 1.
What are you getting

1. Dynamic hair. Great.
2. Scene update button. Great & about time should have been with the first version. Wait a minute it was.
   See below from Transposer Help File.

Update Your Scene
Once you have imported a figure from Poser you can update it. You simply need to close and save the Carrara scene in which you imported the Poser file, make your changes in Poser and reopen your file (.car) in Carrara: the changes you made in Poser will be there!
Note that there are a number of limitations to the update:

• The update will only affect existing figures or props. If you add figures or props to your Poser scene, they will not be added to your Carrara scene.

• The animation change will be updated. However the length of the animation should not be changed (otherwise you will need to update the end keyframe manually inside Carrara).

• Material changes will not be taken into account. This allows you to change the shading inside Carrara.
  O.k. so you now have a button to make it easier.

3. Network Rendering. O.K. if you have more than one computer. I wonder how many Carrara user`s do?

4. Michael 3 & Victoria 3 models included. Well you can order both the base models from Daz for Free.
   I wonder what you get in addition to the base model to give you a $79.90 value!

And other additional new features;

• Enable/Disable Lighting on Import
• Import Spotlights
• Import of PZZ files (compressed Poser files)

What do you think?
Worth paying Yes or No?