What will be changing is Chuck's relationship with his family. Ellie now not only knows what Chuck is up to, she also knows her family has always been involved in espionage. Despite her new baby with her husband, Awesome (Ryan McPartlin), Ellie probably will not want to close the door to that part of her history, especially with mother Mary (Linda Hamilton) back in her life. Look for Ellie to come into Castle from time to time to help out Chuck's new team. Especially with the plot of the master plan going back years, Chuck will need Ellie's help to decode what is happening.
The last thing to expect from a final season of Chuck is a lot of closure. Many things happen in "Chuck Versus the Cliffhanger," but none take Chuck in majorly new directions that haven't been broached before. While the rules keep changing, the game stays the same. As Chuck goes on his final missions, look for a lot of tie-in to past seasons and events. Rather than a new unfurling of further net, the final season of Chuck should begin drawing the loops closer, making connections where there were none before. Given four years of brilliant writing, the odds are in Chuck's favor that the writers will be cooking up a genius ending. Do not miss it.
Chuck will move to Fridays at 8pm next season, as it presents its final season on NBC.