Darth Vader: Sith Lord

Backstories: Star Wars – Darth Vader: Sith Lord is an upcoming juvenile storybook that's set to be released on August 31, 2016.

Summary
''Who is Darth Vader? How did the once great Jedi become a fearsome villain? Who are the allies and foes Darth Vader has faced? In this biography -- complete with black-and-white illustrations, timelines, and character profiles -- young readers will delight in learning the complete history of the Sith Lord.''