Kate Winslet has played everyone from a fiesty society girl to a young woman with a lot of memories she wants to get rid of, but her next turn is a more serious role than we’ve come to expect from her. A new teaser trailer for Steve Jobs has been released, and while it doesn’t give us a whole lot, it does give a glimpse of Winslet’s look in the biopic about the Apple genius, played by Michael Fassbender.

Kate plays Joanna Hoffman, the former marketing chief of Macintosh, and is sporting a darker look than we’re used to seeing. The film also stars Seth Rogen as Steve Wozniak and Jeff Daniels as former Apple CEO John Sculley. In the trailer, we get a quick glimpse of Winslet, Rogen, and Daniels as various voices give us an idea of just how dramatic the film will be.

“At 9:41, planet’s going to shift on its axis line forever. Two most significant events in the twentieth century: Allies win the war and this,” Fassbender says.

The trailer closes with a look at him wearing Jobs’ iconic black turtleneck as he walks onto a stage to a rowdy round of applause.

While this isn’t the first film about Jobs–Ashton Kutcher portrayed the entrepreneur in 2013–it’s one of the most anticipated due to the issues that have plagued it from the start; Christian Bale, Leonardo DiCaprio, and David Fincher all walked away from the project, which was written by Aaron Sorkin and is directed by Danny Boyle.

Winslet spoke earlier this year about her role in Insurgent , saying the part was especially difficult because she was pregnant during filming.

“It affects your ability to feel like you’re not actually disappearing. I just didn’t feel very together at all, physically or mentally. I don’t have those great, strong, glowing pregnancies,” Kate Winslet said.