Darkhorse Comics and Blizzard Entertainment have announced that a new comic series is in the works. 

A graphic novel is due to arrive in April 2017 telling the story of the original Overwatch team.

Comic-Con 2016: Dark Horse and Blizzard Partner for New Overwatch Comics - IGN

Get closer to your favorite Overwatch heroes. Overwatch fans will have plenty of opportunity to enjoy the game's colorful characters and universe on the printed page in the months ahead. Today Dark Horse Comics and Blizzard Entertainment announced a partnership that will result in a new Overwatch graphic novel and an art book.