I've been desperately searching for news on when the creators of NDoc where going to release the version that is compatible with the 2.0 framework.

While I don't think it is fully functional for the new types like generics, I did find a link with the binaries that will at least allow you to create documentation for apps and assemblies created with the 2.0 framework.

It can be found here.

The bottom response is the link to the binaries.