The script, which was penned by "The Office" writers Gene Stupnitsky and Lee Eisenberg, will be undergoing minor rewrites, as Ramis was set to make a cameo appearance as Dr. Egon Spengler. Though the current plot hasn't been revealed, it has been eluded to that the original team of Venkman, Spengler and Stantz would be passing their Proton Packs onto a group of ghost-busting newbs.
Prior to Ramis' passing, the script wasn't far enough along to start filming in 2014. Ivan Reitman, who will be directing the sequel, is said to be meeting with Sony production executives in the near future to discuss how to proceed on the film, which is said to be in active production. Ramis passed away after a battling complications from a rare autoimmune disease on February 24, 2014.