Watch: Star Wars Posts Surprise Teaser Trailer

A new mini trailer for the new Star Wars instalment has been dropped via the movie's Instagram account.

The video, only 15 seconds long, shows some previously unseen footage of the upcoming Episode VII: The Force Awakens.

In one of the scenes, British actor John Boyega, who plays Finn, brandishes a light saber in the woods as he prepares for a duel, seemingly against Kylo Ren, the character played by Adam Driver.

The teaser trailer also shows an army of Stormtroopers and a close-up of Rey, played by Daisy Ridley, with a droid.

A voice is heard saying: "There has been an awakening. Have you felt it?"

Star Wars Episode VII will be released in December 2015.

It will be Disney's first of three Star Wars instalments as it expands the universe originally devised by George Lucas in the 1970s.

The teaser trailer used Instagram's new landscape photo and video feature.

A full trailer released in April featured a scene with Harrison Ford character Han Solo and Chewbacca.