'The Expanse' Season 4 Release Date, Trailer, Plot, Cast, and More

What does the move from Syfy to Amazon really mean?

Since its debut on Syfy in 2016, The Expanse has always been best described as Game of Thrones in space.” While the futuristic sci-fi show set during a spacefaring age can’t quite compete with HBO’s beloved fantasy series, The Expanse nonetheless delivers a politically charged action drama. Except instead of the continent of Westeros and a war for the Iron Throne, it’s a war waged on multiple fronts across the solar system.

Set hundreds of years into the future when humanity has colonized the solar system, The Expanse details growing tensions between the United Nations-controlled Earth, the independent military power of Mars, and the working class “Belters” who live on an asteroid belt mined for resources. After a tragic accident strikes an ice mining vessel at the start of the series, a vast conspiracy is exposed that could spark all-out war.

Syfy cancelled The Expanse back in May 2018 after three seasons, but Amazon quickly saved the series after fans demanded a Season 4.

Here’s everything to know The Expanse Season 4 and the future of series after that.

When Is The Expanse Season 4 Release Date?

While there’s no official release date scheduled yet, Deadline reported in late January 2019 that The Expanse Season 4 would release sometime in 2019.

However, we can make some guesses about when it might actually air.

Production on Season 3 ran from July 12, 2017 to December 6, 2017, and then it aired weekly from April to June 2018. That’s four months between production’s end and the first episode airing.

We also know that production on Season 4 ended on or around February 8 and a pre-emptive wrap party for the season was held in late January. If production to air dates remain the same as it was with Syfy, then that would mean a June 2019 release date at the earliest.

It’s also possible, however, that because The Expanse is an Amazon show now, the entirety of Season 4 — supposedly 10 episodes in total — will release all at once. If that is indeed the case, then the time between the end of production and the series air date is closer to six months. So Season 4 might not be released on Amazon until July 2019.

The closest thing we have to a trailer is a behind-the-scenes video.

Is There a Trailer for The Expanse Season 4 Yet?

While there’s no official trailer or even a teaser for The Expanse Season 4 just yet, Amazon has plenty of videos over on its YouTube channel, including the above behind-the-scenes video commemorating the start of production in October 2018.

The Season 3 trailer debuted barely over a month before the season began airing, and there’s no telling whether or not Amazon will follow a similar promotion schedule.

Expanse Cibola Burn
This is some of the art featured on the cover of 'Cibola Burn', the novel Season 4 is based on.

What Is the Plot of The Expanse Season 4?

The Expanse showrunner Naren Shankar confirmed to Entertainment Weekly in June 2018 that Season 4 would follow Cibola Burn, the fourth novel in the source material published by author James S.A. Corey.

“The book Cibola takes place entirely on Ilus,” Shankar said of a new planet discovered outside the solar system. “We are there for one complete novel. We are going to tell that story in Season 4, sure, but we’re not leaving Earth and Mars and the Belt behind.”

After the Ring was discovered in the Season 3 finale, humanity gained access to hyper-fast travel to 1,000 or more inhabitable solar systems. Ilus is one planet that’s explored in the ensuing Cibola Burn.

The Expanse
Many familiar faces will return.

Who’s in the Cast of The Expanse Season 4?

For the most part, the core characters that survived through Season 3 should return for Season 4.

That includes Thomas Jane as Joe Miller, Shohreh Asgdashloo as Chrisjen Avasarala, Steve Strait as Jim Holden, Dominique Tipper as Naomi Nagata, Wes Chatam as Amos Burton, Cas Anvar as Alex Kamal, Frankie Adams as Bobbie Draper, Shawn Doyle as Sadavir Errinwright, Chad L. Coleman as Col. Frederick Lucius Johnson, Florence Faivre as Julie Mao, Cara Gee as Camina Drummer, and David Strathairn as Klaes Ashford.

But new faces will be introduced as well.

In an Instagram post, actress Lyndie Greenwood (Sleepy Hollow) confirmed that she’d wrapped production on The Expanse Season 4 as Dr. Elvi Okoye. Actor Burn Gorman (Torchwood, Pacific Rim) is also joining for Season 4 as security chief Adolphus Murtry. Lily Gao and Rosa Gilmore have also joined the cast in undisclosed roles.

Here’s Where to Watch The Expanse Seasons 1-3

As of February 8, Amazon became the exclusive place to stream The Expanse, which is also when Season 3 finally became available after originally airing on Syfy last spring and summer.

Watch The Expanse on Amazon right now with a Prime subscription.