At the end of July, Audi ->ke14 dropped the first teaser video for a new model that will make its world debut in September at the 2013 Frankfurt Motor Show.

Today, Audi unveiled a new teaser video that comes with the promise that the first details on the new model will be unveiled on August 21, 2013.

In both teaser videos, Audi said nothing about what model is hiding under the covers. The only thing that Audi let us know is that these are two "new" models. Despite the relative lack of information, we are pretty certain that this is the revised A8 .

What make us assume that this is the A8? Well, the model hiding under the silk cloth seems to be a sedan and the only sedan that Audi has tested in the past few months is, of course, the updated A8.

But we will see if we were right in just a few days. Stay tuned!