Simon Kinberg (X-Men: First Class, Sherlock Holmes) serves as executive producer and will write the premiere episode. Dave Filoni, who was supervising director on Star Wars: The Clone Wars (which ran from 2008-13 on Cartoon Network), and Greg Weisman (The Spectacular Spider-Man, Young Justice) will also executive produce. Casting will be announced at a later date.
Star Wars Rebels takes place between Star Wars: Episode III - Revenge of the Sith and Star Wars: Episode IV - A New Hope, which spans about two decades. The animated series is set "in a time where the Empire is securing its grip on the galaxy and hunting down the last of the Jedi Knights as a fledgling rebellion against the Empire is taking shape."
