While we had been expecting the first trailer for Captain America: The Winter Soldier to debut with Thor: The Dark World, we now have some more concrete proof that will indeed be the case. The British Board of Film Classification has now officially classified the first trailer for Captain America: The Winter Soldier, which is usually something that happens just a couple weeks before the trailer is released.
According to the BBFC, the Captain America: The Winter Soldier trailer has a running time of two minutes and twenty-three seconds. There have been Captain America: The Winter Soldier trailers aired at various Comic Cons and other events, but this new trailer will be the first theatrical trailer released.
Thor: The Dark World is scheduled to be released in movie theaters in the United States on November 8, 2013. However, the film is being released a week early in the UK, so British fans will likely get to see the Captain America: The Winter Soldier trailer on October 30, 2013. It's unknown if Marvel Studios will officially release the trailer in advance online or not.