Now it remains to be seen whether or not Marvel actually has Bucky Barnes adopt the White Wolf identity from the comics, complete with his own white vibranium suit.
And if he takes on the White Wolf identity, that makes Steve Rogers’ successor to the Captain America mantle much clearer.
It is entirely possible that the White Wolf mention in Black Panther was simply a fun Easter egg and nothing more; a bit of fan service for those who know the comics.
This is all pending he survives Avengers: Infinity War, of course.