No Tintin in the Congo in upcoming boxed set.
From Publishers Weekly:
Little, Brown Books for Young Readers, which had been planning to publish Tintin in the Congo, a book criticized for its racist, Colonial-era depictions of Africans, has quietly pulled the title from its fall list, PW has learned. The publisher also said it will not include the book in a forthcoming box set of all 24 books in the Tintin series.