I've separated the movies from the TV and Online series. This should make it much easier to search for a specific movie that's under development.
My distinction between "Under Development" and the year by year pages (which I had previously labeled "Upcoming") is whether a release date has been assigned. When I first hear about a project (maybe when a work has been optioned) I'll log it here, along with any names associated with the project and maybe a reference to the original material. Once the project has been developed to a point where a release date has been assigned, I'll move it to the appropriate Movie [Year] page.
Although they may be ephemeral, the idea that these movies may happen is pretty exciting, and I'm happy to follow along as the ideas either evaporate or congeal.
Ant-man 3
Director: Peyton Reed
Starring: Paul Rudd, Evangeline Lilly, Michael Peña
Under development by Marvel
Avatar 3
Under development by 20th Century Fox (2023?)
Avatar 4
Under development by 20th Century Fox (2025?)
Avatar 5
Under development by 20th Century Fox (2027?)
Black Cat
Under development by Sony
Blade
Starring: Mahershala Ali
Under development by Marvel Studios as part of Phase 4
The Bride of Frankenstein
Under development by Universal as part of their Shared Monster Universe
Captain Marvel 2
Under development by Marvel Studios
The Craft
Director: Zoe Lister-Jones
Starring: Cailee Spaeny, Gideon Adlon, Nicholas Galitzine, David Duchovny
A sequel/remake of the 1996 movie
Deadpool 3
Under development at Marvel Studios
Descender
Under development by Sony
Based on an Image series by Jeff Lemire and Dustin Nguyen
Flash Gordon
Director: Taika Waititi
Developed as an animation movie for Disney
Fun Home
Produced by and starring Jake Gyllenhaal
Based on Alison Bechdel’s graphic novel
GAMBIT
Starring: Channing Tatum
This movie was originally scheduled for an October 6, 2016 release, but was delayed indefinitely
Under development for Fox
Gotham City Sirens
Director: David Ayer
Starring: Margot Robbie
Under development
Based on the comic series by DC Comics
The Great Machine
Under development at Legendary Entertainment
From the comic Ex Machina by Brian K. Vaughan
Green Hornet
Director: Gavin O'Connor
Under development by Paramount Pictures
A re-imagining of the character as a gritty, updated version
Grim Jack
Under development by the Russo Bros
From the comic by John Ostrander and Tim Truman
HARBINGER
Movie under development by Sony
Based on the Valiant series
HARBINGER 2
Movie under development by Sony
Sony announced two movies based on the Valiant series
HARBINGER WARS
Movie under development by Sony
Heathen
From the comic series
Irredeemable
Movie under development by Fox
Based on the comic by Mark Waid
Kingdom of Souls
Under development by Warner Bros. and Michael B. Jordan
Knight Rider (Reboot)
Under development for the Machinima digital network
The Little Mermaid
Live action adaptation
Under development by Disney
Lobo
Under development by Warner Brothers
CANCELLED
Lumberjanes
Director: Emily Carmichael
Under development by 20th Century Fox
From the comic book
The Lunch Witch
Director: Clay Kaytis
Starring: Kate McKinnon
Under development by Amblin Partners
Based on the graphic novel by Deb Lucke
Mad Max 5
Under development by George Miller
Major Matt Mason
Starring: Tom Hanks
Under development by Paramount Pictures and Mattel Films
Myst
Under development by Village Roadshow Entertainment Group
Also as a TV shoe
The New Gods
Under development for Warner Bros by Ava DuVernay
Night Wolf
Under development by Kevin Hart and STX
The Pinkerton
Under development by Bad Robot
Planet of the Apes Project
Director: Wes Ball
Under development for Disney
Red Sonja
Under development by Millennium Films
SCOTT MCCLOUD'S THE SCULPTOR
Under development by Sony
Shrunk
Director: Joe Johnston
Starring: Rick Moranis, Josh Gad
Sequel to Honey, I Shrunk the Kids
Spawn
Director: Todd McFarlane
Starring: Jeremy Renner, Jamie Foxx
Under development by Todd McFarlane
Spider-Man: Into the Spider-Verse 2
Director: Joaquim Dos Santos
Under development for Marvel
Spider-Woman
Under development for Sony
Star Wars Kevin Feige Project
Under development by Lucasfilm
Tank Girl
Starring: Margot Robbie
Under development by Lucky Chap Entertainment (Margot Robbie)
The Tomorrow War
Director: Chris McKay
Starring: Betty Gilpin, Yvonne Strahovski, Chris Pratt
The Trench
Spinoff from Aquaman
Van Helsing
Under development by Universal as part of their Shared Monster Universe
We Can Be Heroes
Director: Robert Rodriguez
Starring: Priyanka Chopra, Boyd Holbrook, Adriana Barraza
Under development for Netflix
The Wolf Man
Under development by Universal as part of their Shared Monster Universe
Wonder Woman Spinoff
Developed by Patty Jenkins focusing on the Amazons