The comedian, who played Dr. Raymond Stantz in the original films, recently said that the long-awaited follow-up could be ready to go into pre-production at the end of this year, and begin shooting sometime in early 2014.
"I feel re-encouraged, reinvigorated by the pages that I have seen," Aykroyd told ABC News. "I know that we're expecting half of the screenplay to be completed very soon."
As for exactly what that screenplay would entail, Aykroyd teased that he wouldn't say much, but that the story could incorporate new technology and real scientific research that's being conducted today.
"The Higgs boson and the particle theories, gluons and mesons, that really gives us a scientific base in terms of our fictional storytelling, to open up to another dimension and have something horrible come through," he said.
"We're going to really put it into ninth gear, in this third one," Aykroyd continued. "It's going to be very, very exciting. I've been more encouraged than I ever have been. It sounds real now. We've got a sharp new writer on it, [original director] Ivan (Reitman) is on it, Harold (Ramis) [who played Dr. Egon Spengler] is on it, I'm on it. And if I can put the catch-net on Billy [Murray, who played Dr. Peter Venkman] and bring him in, it will be wonderful, if he decides to do it. There will always be a hole for him."
Aykroyd has long been optimistic about the project -- he's basically been developing the movie for free for years -- and recently chastised Sony over its inability to commit to making it. Here's hoping that this latest draft is Aykroyd's -- and audiences' -- ticket to seeing "Ghostbusters 3" finally spring into action.