Columbia Pictures has announced that it will be producing the third film in the Ghostbusters franchise. While Harold Ramis and Dan Aykroyd penned the first two films in the series, The Office writers Lee Eisenberg and Gene Stupnitsky are set to write this installment.Variety: Columbia Calls Up New Ghostbusters (September 4, 2008)

On March 27, 2009, Aykroyd confirmed that all the original Ghostbusters would be involved in the new film, but in a 'mentor' capacity to a new team of younger Ghostbusters.MTV Movies Blog: EXCLUSIVE ‘Ghostbusters’ Update — Straight From Egon! (March 27, 2009)

On May 7th 2010, Harold Ramis discussed the possibility of Ghostbusters 3 being released by Christmas 2012. Ramis went on to say that pre-production work is progress.

“Well, there’s been a lot of talk about a third Ghostbusters film, which has now become real. It’s… I can say with some certainty that there will be a third movie. It won’t be out until Christmas 2012, but the work is going on now.” Film Shaft: "Harold Ramis Promises Ghostbusters 3 By Christmas 2012

In March 2009, the film blog Cinema Blend posted a story citing Judd Apatow's production company, Apatow Productions, would be in charge of the film.Cinema Blend: Apatow Productions in Charge of G3 (March 1, 2009)Aykroyd has also confirmed that all the original Ghostbusters would be involved in the new film, but in a 'mentor' capacity to a new team of younger Ghostbusters.MTV Movies Blog: EXCLUSIVE ‘Ghostbusters’ Update — Straight From Egon! (March 27, 2009)Rumors had previously suggested a new team of Ghostbusters would form, involving the likes of Seth Rogen, Jonah Hill, James Franco and Michael Cera.Chicago Tribune: Harold Ramis confirms 'Ghostbusters III' (September 5, 2008)

At Fantastic Fest in September 2008, actor Bill Murray (who played original Ghostbuster Peter Venkman) said he was interested in doing another Ghostbusters movie, especially after recording his voice for the recently released Ghostbusters video game.Ain't It Cool News: Bill Murray Comments on Ghostbusters 3 (September 26, 2008)

• Bill Murray as Peter Venkman

• Dan Aykroyd as Raymond Stantz

• Harold Ramis as Egon Spengler

• Ernie Hudson as Winston Zeddmore

• Sigourney Weaver as Dana Barrett

• Rick Moranis as Louis Tully