The second full-length trailer for Disney's Rogue One: A Star Wars Story has been released - leaving fans buzzing over a glimpse of Darth Vader.

Directed by Gareth Edwards (who made the 2014 blockbuster Godzilla), Rogue One is set between the events of prequel movie Revenge of The Sith and 1977’s Star Wars: A New Hope, and follows a band of Rebel Alliance soldiers as they attempt to steal the plans to the world-destroying Death Star, a super weapon being developed by the evil Empire.

Darth Vader features in the film, and the latest clip closes with the briefest of glimpses of the iconic Star Wars villain.

"I shrieked when Darth Vader showed up at the end. Not exaggerating," one fan tweeted. Another tweeted: "Vader tease was perfect. I don't need to see anything else before December... You have my $ #RogueOne."

Rumours of a return of Vader have swirled almost since news of standalone Star Wars films first broke.

Last month, Edwards appeared at a Star Wars Celebration fan expo, where he acknowledged that James Earl Jones had come in to record some dialogue for a character in Rogue One - but he refused to confirm exactly who it was.