This could have paved the way for Bucky to appear in Black Panther next year, but according to Sebastian Stan, we won't see him in T'Challa's standalone movie. Stan definitely stated:
I am not in Black Panther.
While a Black Panther appearance has now been ruled out, Sebastian Stan added to Good Morning America that Bucky's current status will be addressed in Avengers: Infinity War, so Marvel fans will still get to see him be thawed in 2018. This was confirmed in the special Infinity War footage screened this past weekend at D23, which showed Winter Soldier and Black Panther heading into battle with the Wakandan army. But as for Black Panther, Bucky will remain in stasis and oblivious to the challenges T'Challa has to face.Read more at HollywoodReporter