A Reddit user claims to have seen Paul Feig's Ghostbusters reboot already, and dropped heavy spoilers for the entire movie, perhaps the most interesting and perplexing fact of which is that Slimer apparently has a girlfriend this time, who helps him to steal Ecto-1 in the movie's final battle. Now, a Redditor claiming they've seen an anticipated movie isn't really worth believing on its own merits, but the user posted details from the movie which weren't revealed to the general public until the international trailer was released sometime after the post was made, so the user is at least connected enough to have seen the trailer early, which makes it highly unlikely to be a lie. Plus, the spoilers on the whole sound so plausible that there's little doubt this is totally on the money.