It was announced at C2E2 during the Star Wars Books panel that we will be seeing a prequel novel for the upcoming film (and first spinoff of its kind) Rogue One: A Star Wars Story.
The novel is going under the title Star Wars: Catalyst, and while no author or set release date was given, it was confirmed that we will be seeing its arrival this fall, ahead of Rogue One, in December.
Here’s the official announcement, courtesy of the Star Wars Books Twitter account:
— StarWarsBooks (@DelReyStarWars) March 18, 2016
Star Wars Underground are speculating that Star Wars: A New Dawn author John Jackson Miller could possibly be writing the story, due to his appearance on the panel, but these are just rumours at the moment.
Rogue One: A Star Wars Story is released on 16 December 2016