Walt Disney Studios chairman Alan Horn revealed the news at a fan event, reported Entertainment Weekly.
"This is not a job or an assignment. It is a seat at a campfire, surrounded by an extraordinary group of storytellers, filmmakers, artists and craftspeople," Trevorrow said in a statement.
"We've been charged with telling new stories for a younger generation because they deserve what we all had - a mythology to call their own. We will do this by channeling something George Lucas instilled in all of us: boundless creativity, pure invention and hope.