There was a teaser video for Ghostbusters 3 (see further below) that came out the other day that Jason Reitman, son of original Ghostbusters director Ivan Reitman, is working on. This film appears that it will go back to the original two movies ignoring the all female reboot from a few years ago. This got my interest. There are a few other subtle references to the original films in the teaser and this video below breaks things down.
Looks like we will have to wait until summer of 2020 for the third film of the original Ghostbusters franchise to hit theaters. I just hope it doesn't suck.