False Alarm: No Captain America: Civil War & Luke Cage Crossover
Now, however, it's learned that doesn't look to be the case.
Non-spoiler info: Alfre Woodward has a small role in Captain America: Civil War unrelated to her Luke Cage character.
Captain America: Civil War spoiler info below the pic.
Spoilers (via Screen Crush):
Woodard has a small, but pivotal role in the beginning of the film. She’ll be playing the mother of an American citizen who was killed during the Battle of Sokovia in Age of Ultron. Her character has a confrontation with Tony Stark where she lays both guilt and blame at him for the death of her son. It’s this encounter that convinces Tony to back the Sokovia Accords that would regulate The Avengers and other “enhanced individuals.”
It's noted Alfre Woodward was cast in Civil War (by Marvel Studios), which wrapped last August, prior to her getting cast in Luke Cage (by Marvel TV) in September.
It's further suggested: "It’s beginning to look like we’ll never see Daredevil and Luke Cage play alongside Captain America and Iron Man."
"Captain America: Civil War" has a May 6, 2016 release date directed by Anthony and Joe Russo starring Chris Evans, Robert Downey Jr., Scarlett Johansson, Jeremy Renner, Elizabeth Olsen, Sebastian Stan, Anthony Mackie, Frank Grillo, Paul Bettany, Don Cheadle, Emily VanCamp, William Hurt, Martin Freeman and Chadwick Boseman as Black Panther.
Captain America: Civil War picks up where Avengers: Age of Ultron left off, as Steve Rogers leads the new team of Avengers in their continued efforts to safeguard humanity. After another international incident involving the Avengers results in collateral damage, political pressure mounts to install a system of accountability and a governing body to determine when to enlist the services of the team. The new status quo fractures the Avengers while they try to protect the world from a new and nefarious villain.