HollywoodReporter buries the lede — this is the final paragraph:
The Kennedy book also was something of a bargaining chip in the Kennedy family’s efforts to quash the History channel miniseries The Kennedys. History channel is part of AETN, which is owned by a consortium including Disney, NBC Universal and Hearst. Disney/ABC Television Group chief Anne Sweeney sits on the AETN board.
And last January, sources told The Hollywood Reporter that Caroline Kennedy personally lobbied Sweeney to kill the miniseries and that Kennedy’s cooperation with the book, including writing the introduction and promoting it on ABC, was part of those conversations.