The Gilded Age Season 4 (HBO) has been renewed and is in active production as of April 2026. Here’s a concise overview of confirmed details and speculations.

It was renewed on July 28, 2025, before Season 3’s finale due to rising viewership. Filming began in late February/early March 2026 in New York after a brief blizzard delay, with shoots in Newport, Rhode Island, in April. Expected 8 episodes; a two-year time jump sets it in 1886.

No official date yet. Likely late 2026 (October–November) or early 2027, based on HBO teases and past schedules.

“Bertha Russell changed Society at a cost. Now, her family must reckon with the consequences as Agnes van Rhijn seizes an opportunity to regain her position. Meanwhile, Marian forges a new path for herself, and Peggy works to be accepted by her future in-laws. In this new era, you must be careful what you wish for.”

Core returns include Carrie Coon (Bertha), Morgan Spector (George), Christine Baranski (Agnes), Louisa Jacobson (Marian), Denée Benton (Peggy), Cynthia Nixon (Ada), Harry Richardson (Larry), and Taissa Farmiga (Gladys). Promotions to series regular: Kelley Curran (Turner/Winterton), Jordan Donica (Dr. Kirkland), Ashlie Atkinson (Mamie Fish). New additions: Jim Gaffigan (President Grover Cleveland), Neal Huff (John D. Rockefeller), Dallas Roberts (Daniel Manning), plus others like Dennis Haysbert, Elizabeth Marvel.

There will be a focus on Russell’s marriage strains (reconciliation or divorce?), Marian/Larry romance, Peggy’s engagement hurdles, Gladys’s fallout, Agnes’s comeback, and political/business intrigue with real historical figures. Fans speculate on the consequences of Bertha’s ambitions, possible weddings, and broader societal shifts. No full trailer yet.

The season promises heightened drama, lavish costumes, and Gilded Age excess. Updates expected as filming continues.