Ghostbuster III
In a recent interview with the Los Angeles Times, Dan Aykroyd revealed that the third Ghostbusters movie could start filming soon. He said that all the original cast have now signed on, including Sigourney Weaver, Bill Murray, Harold Ramis, Ernie Hudson and of course Aykroyd himself.
Having Bill Murray onboard was crucial, said Aykroyd. Apparently Murray holds a one-fifth controlling interest in the Ghostbusters franchise. He played down Murray’s reluctance to commit to a third movie.
Source: http://sffmedia.com/films/science-fiction-films/365-ghostbusters-iii-filming-soon-with-original-cast-.html
I liked the first two movies so much, I wish I will not be too disappointed by the third one. But knowing that the original cast is there is a little comforting. 