New comments from co-director Jennifer Kluska in an article about Sony Animation:
What We Know So Far:
On October 1, 2015, it was reported an animated film was in the works with a story following a similar premise as the original movies. Ivan Reitman and Tom ■■■■■■■ were producing it through their Montecito Picture Company, with Ali Bell and Kristine Belson overseeing for Sony Pictures Animation.
http://www.tracking-board.com/exclusive-ghostbusters-animated-feature-in-development-at-sony/
The Tracking Board “Ghostbusters Animated Feature In Development At Sony”
On March 8, 2016, it was reported Fletcher Moules will direct.
The Hollywood Reporter “Ghostbusters Animated Movie Snares ‘Clash of Clans’ Commercial Director”
On April 28, 2016, it was reported in the EMPIRE June 2016 issue, Ivan Reitman would co-direct. “There’s an animated feature, which Reitman will co-direct.”
Semlyen, Nick (2016). ‘‘Empire Magazine’’ Issue 324 June 2016, p. 59. Bauer Media Group, Harborough, Leicester, United Kingdom, ISBN 0195145045.
On July 14, 2016, Ivan Reitman confirmed the movie is in the middle of being written, “And we’re in the middle of doing that right now…They’re being written.”
Vulture “Ivan Reitman on Bill Murray, Internet Trolls, and Why He Fought for the Ghostbusters Reboot”
On July 15, 2016, it was reported the animated movie will be from the perspective of a ghost. “There’s an animated Ghostbusters movie that will be told from the perspective of a ghost, and an animated TV series set in 2050 called Ghostbusters: Ecto Force, in development at Sony Pictures Animation.”
Fortune "The Original ‘Ghostbusters’ Director Loves the Remake. Here’s Why
On March 21, 2017, Ivan Reitman projected the movie’s release around 2019 or 2020. It depends on how fast they can get it together. “He hopes the animated film will be in theaters in either 2019 or 2020 but can’t say for sure. “It depends on on how fast we can get it all together,” he said.”
io9/Gizmodo “The Future of Ghostbusters Is Uncertain, But Ivan Reitman Has a Plan”
On July 20, 2017, during the Ghostbusters 101 panel at San Diego Comic Con, Reitman confirmed the animated movie would explore the ghost world through a ghost’s perspective. “Ivan Reitman spills secrets about an upcoming Ghostbusters animated movie and one that explores the ghost world from the ghosts’ perspective.”
Reitman also mentioned the animated movie is “deep in design”, it is “dealing with Ghost World quite a lot”, and is the “Ghostbusters from a ghost’s point of view”. Ivan Reitman says: “I think I think we have wonderful plans for both an animated feature we’re deep in design for already and uh a really great story that’s going to surprise everybody and I think knock you out. And um we’re dealing with Ghost World quite a lot and that’s um looking at the film from the ghost’s point of view and um Ghostbusters from a ghost’s point of view and I think that will be something very interesting for you.”
Mundane Matt YouTube “Ivan Reitman talks about GHOSTBUSTERS future at #SDCC” 10:46-11:17
Reportedly, the ghost would join the team of Ghostbusters.
Den of Geek “Ghostbusters animated movie detailed, possible 2019 release”
On July 23, 2017, during the Empire Podcast, Ivan Reitman mentioned the Ecto Force animated series was put on hold to really focus on the animated movie which will ‘kick off the world’ and ‘at least go a long way to bring back the classical story’ of the movies. Reitman wanted the movie to come first. “Yeah, we put it on hold. We got a lot of inquiries and interest from different, uh, television networks to put it on and then at the last second, we decided to hold on the deal and really focus on the new Ghostbusters animated feature and sort of have that kick off the world and I think it’s because I knew the animated feature was going to bring–going to at least go a long way to bring back the classical story we originally started and, uh, I wanted that to come first.”
Empire Podcast #272 “Empire Podcast #272: Comic-Con Special With Ivan Reitman, Jeph Loeb, Scott Buck, Roel Rein” 15:23-15:59
On January 15, 2019, it was reported the animated movie will release after the new live action movie in 2020. A different crew is working the animated movie.
https://ew.com/movies/2019/01/15/new-ghostbusters-movie-jason-reitman/
Entertainment Weekly “Ghostbusters resurrected: Jason Reitman will direct a new film set in the original universe”
On June 8, 2022, Jason Reitman and Gil Kenan announced the movie was in development and it would be directed by Jennifer Kluska and Chris Prynoski and written by Brenda Hsueh. They also hinted at new characters and a new take then noted it was a passion project of the late Ivan Reitman.
The older thread about the movie: