Fans of Star Wars are trying their best to keep an eye on every minute details regarding the franchise's upcoming instalment "Star Wars Rogue One." Hence, when the secret trailer from London's Star Wars Celebration event leaked on internet, the whole Star Wars community went into a frenzy.

One of the most prominent elements of the trailer is the presence of the iconic character Darth Vader at the end of it. Though he is not seen in the trailer, the breathing sounds in the background are undoubtedly of the renowned Sith Lord. Also, a silhouette can be seen in the trailer that resembles Vader.

Though there is no official confirmation, it seems that Darth Vader will have a prominent role in the movie. Since "Rogue One" is set before the events of "Star Wars: Episode IV – A New Hope," Vader will be an important part of the story as the consequences of the movie will led to the destruction of Death Star, Vader's deadly super-weapon, as was seen in "A New Hope."

However, fans are wondering that how long Vader's role will be in the movie as the detailed synopsis is not yet revealed. So far, the only detail available regarding the plot is about a group of Rebels who are on a mission to steal the plans of Death Star.

James Earl Jones, who voiced Darth Vader in the previous movies, has been confirmed to reprise his role. Hence, there is a significant possibility that Vader will be majorly involved in the story and will play a prominent role in stopping the Rebels' mission.

To find out about Vader's exact role in the "Rogue One," fans will have to wait a bit longer till any official announcement is made. The leaked trailer is recorded with a video camera, hence it is of very poor quality. Till it is released officially, you can watch the leaked trailer below.

"Star Wars Rogue One" is scheduled to release on Dec. 14, 2016.