Rogue One: A Star Wars Story arrives in theaters in December 2016 and is the first Star Wars spinoff/anthology film of many planned by Disney/Lucasfilm. Naturally, the studios used this year's Star Wars Celebration event to promote the movie, with a panel that included the main Rogue One cast, director Gareth Edwards and Lucasfilm president Kathleen Kennedy. Gwendoline Christie, who plays Captain Phasma in the Star Wars movies (starting with Episode VII: The Force Awakens), hosted the panel.
A behind the scenes featurette for Rogue One debuted during the event and can now be watched online. Concept art and a fresh poster for the film were also shown, along with a Rogue One trailer that was exclusive to the Star Wars Celebration and won't be released online. However, since Screen Rant has a presence at this year's Celebration, we can offer a description of what was shown.
The Star Wars Celebration trailer for Rogue One is narrated by the film's protagonist Jyn Erso, played as a young adult by Felicity Jones (The Theory of Everything). The trailer opens with Jyn as a child on the run (it seems her homestead has just been destroyed) as an Imperial shuttle passes overhead - along with voiceover from Jones, saying "There isn't much time. Every day, we grow weaker. While the day grows grimmer, we still have a chance... to make a real difference." Thereafter, the trailer jumps ahead in time to Jyn as a young adult, revealing the voiceover was from a pep talk she was delivering to other members of the Rebel Alliance.
Much of the footage in the Celebration trailer for Rogue One was carried over from the previously-released theatrical trailer, further teasing the dangerous nature of the Rebel mission to steal the plans to the original Death Star in the film. Nevertheless, there are a number of fresh shots spliced into the mix, showing spaceships and stormtroopers in battle.
Moreover, the big reveal comes at the end of the trailer - with a shot of the Death Star's interior, where Darth Vader's shadow cascades across the floor... and then his breathing can be heard.
It had been previously rumored that a second Rogue One trailer would be released online after debuting on ABC and (possibly) being screened during the film's Star Wars Celebration panel. It's now being reported that the Rogue One featurette that was unveiled during the Celebration festivities will, in fact, be the preview that air on the network tonight instead. All the same, the second Rogue One theatrical trailer - featuring a similar tease of Darth Vader, no doubt - should be coming sooner, rather than later. In the meantime, there's plenty of fresh Rogue One goodness from Star Wars Celebration to enjoy (including, the first look at Mads Mikkelsen's character in the film).
Rogue One: A Star Wars Story opens in U.S. theaters on December 16, 2016, followed by Star Wars: Episode VIII on December 15, 2017, the Han Solo Star Wars Anthology film on May 25, 2018, Star Wars: Episode IX in 2019, and the third Star Wars Anthology film in 2020.