Audi has released a teaser video for its new 2015 Audi A8 ahead of its debut at the 2013 Frankfurt Auto Show.

Two A8s appear in the video, released over the weekend, covered in sheets.

"With the Frankfurt Auto Show still a few days away, we decided to give you a sneak peek at one of the cars we're going to show you there," said Audi in the video. "Can you guess what it is?"

The corner of one of the sheets is pulled back to show the brake rotors of a new vehicle.

The new Audi A8 is due in showrooms next fall.

Changes expected by most experts include an updated night-vision system, restyled taillights, and headlights.

The new model will be revealed at the Frankfurt Auto Show on Aug. 21, 2013.

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