Hi Nikolai,
Have a look on the Template with 2 classes in the Adapter Scenario.
I'm starting to try to migrate some of my version 1.0 templates (extended entity), but i do it manually.
In the version 1.0, I have used partial classes. I think it won't be so difficult.
What I know for the moment, there's a great work in the template to use most as possible .Net 2.0 features like dictionnary, generics,etc ...
So these templates are very different, I think (even if i didn't check all the details)
Mika