Premium Extended Library

I see the term “premium extended library” associated with some products in the GHI catalog. I have a Cobra III board. Is the “premium extended library” (not mentioned in the product description of the Cobra III board) actually the GHI Electronics NETMF v4.3 library extension for Microsoft’s NETMF, or is it a different animal that I don’t have?

“The beginning of wisdom is to call things by their proper name.”
― Confucius