More As This Story Develops, which stars Jeff Daniels, focuses on the team working in a broadcast newsroom.
Kennedy has now landed a role in the drama, the New York Post reports. However, details of her character have not yet been revealed.
Kennedy, who is also known as Kick, is the daughter of Robert F Kennedy Jr.
If the reports are correct, she will be joining stars such as Dev Patel, Emily Mortimer, Olivia Munn and Alison Pill.
John Gallagher Jr., Thomas Sadoski and Josh Pence have also signed up to appear in the project.
Sorkin has previously described More As This Story Develops as "aspirational" and "wish-fulfilment".