The episode "Songbird Road: Part Two" seemed to wrap up Nicky's storyline quite nicely, but we haven't seen the last of Jack's brother. Michael Angarano, who played the younger version of the character in flashbacks, discussed Nicky's role in season four with Good Housekeeping. "He's another connection to Jack," he said. "He knew apart of Jack that nobody else did, not even Rebecca. He's the missing link to the family that nobody knew was missing. I think Nicky will bring a lot of understanding and depth to the show in an unexpected way."
Fogelman added that the show has "a big plan of expansion" for season four. "The show is intended to be the expansive ways our lives evolve and connect us with our people . . . That starts happening more and more." Perhaps we'll meet new characters in the flash-forward?