Marvel Entertainment is partnering with Scholastic for a multi-year deal planned to bring "new original stories" about Marvel characters to "young readers around the world." This partnership is scheduled to kick off in 2020 with two middle grade prose novels from Scholastic - Shuri: A Black Panther Novel by Nic Stone, and Avengers Assembly by Preeti Chhibber. Scholastic has a pre-existing deal with Marvel to publish chapter books.
Source:
Newsarama
