Rumors in 2016 pointed to an adaptation of Naruto Shinden (Naruto True Legend), but now it has finally been confirmed that all three novels will be adapted into anime .
For now, we don't have any details about the project; confirmed adaptations include Shikamaru Hiden (Shikamaru's story), Konoha Hiden (the secret history of Konoha village), and Sasuke Shinden (the true legend of Sasuke).
Since Masashi Kishimoto finished his manga in November 2014, Shueisha has published 10 novels based on the saga, with 6 novels belonging to the Hiden (Hidden Legend) series, each based on a different character from the franchise.
After the conclusion of the first 6 novels, a new series of novels, dubbed Shinden, began to be released, comprising the first 3 novels.
Via: OtakuPT