A recently released artbook for Avengers: Infinity War reveals a few dramatically different looks for Bucky Barnes/Winter Soldier.
The image, which comes from the Marvel's Avengers: Infinity War - The Art of the Movie via Reddit, shows a number of different potential looks for Bucky in the film. However, most noteworthy is probably the image on the far-right, which looks distinctly Wakandan and is a radical departure from what the character wore in the film.
Following the events of Captain America: Civil War, Bucky went to Wakanda so as to free him from HYDRA's programming. The character was turned to dust at the end of Infinity War. Despite that apparent death, Marvel is currently working on a limited series focusing on Winter Soldier and Falcon for its upcoming streaming service.
The untitled sequel to Avengers: Infinity War will release on May 3, 2019. Directed by Joe and Anthony Russo, Marvel’s Avengers 4 stars Robert Downey Jr., Josh Brolin, Mark Ruffalo, Tom Hiddleston, Chris Evans, Chris Hemsworth, Jeremy Renner, Chris Pratt, Elizabeth Olsen, Sebastian Stan, Benedict Cumberbatch, Paul Bettany, Samuel L. Jackson, Cobie Smulders, Benedict Wong, Zoe Saldana, Karen Gillan, Vin Diesel, Dave Bautista, Pom Klementieff, Scarlett Johansson, Tom Holland and Anthony Mackie.