Watch the 1st teaser for the final season of 'Star Wars Rebels'

— -- "Star Wars Rebels" executive producer Dave Filoni said today his team all felt "the time was right" for Ezra (Taylor Gray), Kanan (Freddie Prinze Jr.) and the rest of the Ghost crew to complete their run on the acclaimed DisneyXD show.

The fourth season of "Rebels" will be its last and will begin airing this fall, with 15 episodes.

"The characters were at a point where their story and their destinies should finally be revealed," Filoni added in a press release today announcing the last season of the show. He added that in no way is this the end of what his team is doing in "Star Wars" animation.

At the end of last season, we saw an epic confrontation between Obi-Wan Kenobi and Darth Maul. We also saw a familiar hero in his younger years: Luke Skywalker. During a panel discussion today at Star Wars Celebration in Orlando, Florida, cast and crew members teased that fans will see other familiar faces in the final season.

"I wish you didn't have to wait till the fall," Prinze told fans.

"It's not like anything else we've done before on the show," Filoni said. "It's different, a little dark."

The storyline for the animated show starts after the events of "Episode III — Revenge of the Sith," when Anakin Skywalker has turned into Darth Vader, but is before "Episode IV — A New Hope," in which we met Luke, Obi-Wan and company for the first time on the big screen.

For fans of the "Star Wars" universe, there's always tons of fun, hidden connections to past movies.

Here's the first trailer for season 4:

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