Marvel Studios President Kevin Feige confirms the news in an interview he conducted with Entertainment Weekly. Even though he wouldn't give specific details, Feige told fans to expect the sequel. He also said they have a "solid direction" on where they want to go for the second one:
Nothing specific to reveal, other than to say we absolutely will do that. One of the favorite pastimes at Marvel Studios is sitting around on a Part One and talking and dreaming about what we would do in a Part Two. There have been plenty of those conversations as we were putting together the first Black Panther. We have ideas and a pretty solid direction on where we want to head with the second one.