After Captain America: Civil War ended with Bucky Barnes/The Winter Soldier being interned in Wakanda, a common suggestion was that he would show up in Black Panther.
However, in a Good Morning America interview with Anthony Mackie, Sebastian Stan confirmed that his Marvel character would not appear in the upcoming movie featuring Chadwick Boseman.
After the events of Marvel’s Captain America: Civil War, King T’Challa returns home to the reclusive, technologically advanced African nation of Wakanda to serve as his country’s new leader. However, T’Challa soon finds that he is challenged for the throne from factions within his own country. When two foes conspire to destroy Wakanda, the hero known as Black Panther must team up with C.I.A. agent Everett K. Ross and members of the Dora Milaje, Wakanadan special forces, to prevent Wakanda from being dragged into a world war.
Black Panther is set to hit theaters on February 18, 2018.