How are they able to keep the title a secret for so long?
Are they really able to find that many people who are willing to keep a secret? Or do only a few people actually know what it'll be called?
shareMy guess is that only a relatively small amount of people know what it's called and that only increases as certain people need to know (i.e. editors, trailer makers, marketing etc.) until it is officially announced. It wouldn't surprise me if the main cast don't know until around the time of it's official announcement. It's not something they need to know to do their job.
They'd also use code name titles, like Blue Harvest, and maybe they even have multiple ones. Then there's the NDA's on top of that and no one wants to go up against Disney/Lucasfilm.
You would just think it would get leaked at some point.
shareThe title was apparently leaked on Instagram (and subsequently removed) -- Fear of the Darkside is the possible title.
shareYou would just think it would get leaked at some point.
No one would believe it unless it came from the actual source. Remember the blowback from the title of Episode II? Ewan McGreggor himself didn't think it was the title and laughed when it was revealed to him.