>Is Codebook 6.2 officially endorsed/sponsored/supervised by Flash Creative Management?
>Is Flash involved in Codebook in any way?

As others have pointed out, Flash Creative Management no longer exists except as a fond memory. Most of the team that worked on the original Codebook (myself included) had left Flash long before their acquisition by GoAmerica.

When Flash decided to get out of the framework business, Ed agreed to take over as shepherd of Codebook.