Disney+'s Agatha Harkness "WandaVision" Spinoff Is Delayed Until Fall 2024

Looks like we haven't seen the last of Agatha Harkness after all. The finale of "WandaVision" left the door open for the evil witch to return, and Disney+ is making it happen next year. So get ready for another new MCU series, "Agatha: Darkhold Diaries" (previously known as "Agatha: Coven of Chaos").

We're not quite sure yet what the series will be about, but we do have two major pieces of casting news. Aubrey Plaza joined the series in an undisclosed role, Variety reported on Nov. 2, 2022. POPSUGAR reached out to Disney and Plaza's reps for comment but did not receive a response. The news came a day after the outlet broke the news that "Heartstopper" actor Joe Locke also joined the cast. His role is currently unknown, though fans have speculated that he'll play some version of the hero Wiccan, aka Billy Maximoff — one of Wanda's sons.

Most of the final episode of "WandaVision" is dedicated to a showdown between Wanda and Agatha (Kathryn Hahn), her nemesis. Though Agatha is defeated in the end, she's still alive and lurking about as a potential mentor for Wanda to lean on since she understands Wanda's magic. But since Wanda technically died at the end of May's "Doctor Strange and the Multiverse of Madness" movie, it's not clear what exactly the plot of "Darkhold Diaries" will be.

Here's what we know about the show so far.

Aside from the fact that the show will focus on Agatha, plot details are being kept under wraps for now, but we do know "WandaVision" head writer Jac Schaeffer will once again tackle this new project in her respective role. It seems likely that the witch will be building her own coven of magical beings to wreak havoc in the MCU.

Hahn will return as Agatha, with Locke and Plaza joining the cast. Emma Caulfield Ford will also reprise the role of Dottie from "WandaVision."

"Agatha: Coven of Chaos" was originally set for a winter 2023 release, Marvel President Kevin Feige revealed at San Diego Comic-Con in July 2022. However, according to The Hollywood Reporter, it's now been delayed until early fall 2024.