There is no specific release encontro, data as of yet. All I know is it's coming out sometime in 2012. Here is IMDb's website on it...link
I'm really relieved to know that Ivan Reitman is directing this one too and that the original cast is going to be in it. It looks like it will be really funny and cool.
I just posted a link on this spot with Dan Aykroyd talking about Ghostbusters 3. In it he says they will start filming in the spring of 2012 so it is definately on it's way!
Seeing that his pergunta was posted some time ago, and the replys are outdated, here is the definite answer:
July 15, 2016 Nationalwide
The buzz right now is the movie is receiving unfavorable reviews... The funny thing is, it hasn't even been out yet... It is because of the trailers of the movie, being judged and coined as "A bad reboot", "A feminist film" and "It's gonna suck big time." Why? The strong belief that movies/ franchises like this should not ever be remaked nor redone, period. My opinion, just watch the movie and see... whatever it is a true buster, or just a slimer...