Previously, when the adapted Takashi Yano’s Itachi Shinden novel, it was part of the Naruto Shippuden TV anime.
And now, one of those spin-offs, a novel titled Naruto Shinden, is getting the TV anime treatment!
Weekly Shounen Jump issue 6-7 announced the TV anime adaptation, though they did not specify wheter if it’s a part of the Boruto: Naruto Next Generations TV anime or not.
The source novel has three parts, the first one being Mirei Miyamoto’s Naruto Shinden.