In addition to reprising his role as Scotty, Simon will pen the next installment of the sci-fi franchise alongside 'Dark Blue' co-creator Doug Jung, reports Deadline.
Zachary Quinto, JJ Abrams, Zoe Saldana, Karl Urban, Simon Pegg, John Cho and Chris Pine
Fans will be holding high hopes for Simon's screenplay, expecting it to be akin to films he previously penned, such as 'Shaun Of The Dead' or 'The World's End'.
Chris Pine, Zachary Quinto, Anton Yelchin, Karl Urban, John Cho and Zoe Saldana are expected to continue their roles as the crew of the USS Enterprise, while former director JJ Abrams will be listed as a producer this time around, due to his 'Star Wars: The Force Awakens' commitments.
'Star Trek 3' is scheduled for release on 8 July 2016, to coincide with the 50th anniversary of the franchise.