As we head into San Diego Comic-Con, where the show will be represented by a panel and a special screening, Lucasfilm have released an extended new trailer for Star Wars Rebels. Check out the trailer below, which confirms that there is at least a hologram appearance by a certain iconic Star Wars movie character... Yep, that's Obi-Wan Kenobi in the Rebels trailer, via a recording made around 15 years before the series began, it seems, as the Republic fell.