After a two-year wait, the first teaser trailer for Westworld's eagerly anticipated fourth season has been published. While it didn't provide any definitive indications or information about the season's plot, it did highlight the return of the majority of the series' principal cast members. Now it appears that an Oscar winner has joined the season's cast.

HBO has confirmed that Ariana DeBose, the star of "West Side Story" and a recent Oscar winner, will appear in the fourth season of Westworld in a regular guest role. However, they haven't revealed any specifics about her character. She may be seen in the teaser trailer at the 0:44 mark, where she appears alongside Evan Rachel Wood's Dolores.

Wood, Thandiwe Newton, Ed Harris, Jeffrey Wright, Tessa Thompson, Luke Hemsworth, Aaron Paul, and Angela Sarafyan are returning key cast members. The fourth season's logline can be summarized as follows: "a dark odyssey about the fate of sentient life on earth."

To summarize how the third season ended, Maeve and Caleb defeated Serac with Dolores seemingly sacrificing himself, William was killed by a host replica of himself, Bernard got closure with Arnold's wife, and Charlotte appears to be poised to be the antagonist of the next season (at least that's what they might have implied).

HBO also recently published the first "Westworld" Season 4 teaser trailer. The disturbing teaser, titled "It doesn't look like anything to me," features a dystopian New York City and terrifying sci-fi visuals, all paired to the music of Lou Reed's "Perfect Day." The teaser trailer may be seen  here.

The fourth season of "Westworld" was delayed due to the coronavirus (COVID-19) pandemic, which was declared in July 2021. However, Wright, who has played Bernard Lowe in the series since Season 1, recently updated Season 4 of "Westworld," confirming that filming had ended in December.

"It's gonna be exciting. I'm not sure exactly when we're to air but within the coming months, certainly," Wright said per CBR.

Season 3 of "Westworld" ended on May 3, 2020, leaving major things unsolved. It was also the first season to take the robot Delores out of the Westworld park and into the real world.

"Westworld"'s fourth season, which will consist of eight episodes, will air on HBO on Sunday, June 26 at 9:00 p.m. ET.

94th Annual Academy Awards - Show HOLLYWOOD, CALIFORNIA - MARCH 27: Ariana DeBose accepts the Actress in a Supporting Role award for ‘West Side Story’ onstage during the 94th Annual Academy Awards at Dolby Theatre on March 27, 2022 in Hollywood, California. Neilson Barnard/Getty Images