What is the outcome of plug-ins like

Shape modeling and t-splines and V6 ? Will people need to stay in V5 in order to use these tools ?
Also , where can a person find help or work being done in Rhino’s sub-d work ?
I have the latest wip. I am looking to do more organic speed modeling .
I like the preciseness of cad , but want to combine organic type modeling to get stuff out. Then perhaps refine it more in cad nurbs.

You will have to ask the people that make those plug-ins. They will need to make a new release.

Check the Serengeti > Sub-D category. There is a lot of information especially in the following thread:
http://discourse.mcneel.com/t/rhino-wip-subdivision-surface-project/

Thanks Wim , for your reply and info