It's unclear exactly what this is, but that tagline is pretty cryptic. Something about the possible end of the Force (Kind of like "No more mutants")? Maybe that's how the saga ends in a few months, with the force going dormant or something (Some people thought, when TFA's title was announced, that it meant that had happened). After all, the Jedi/Sith conflict is in part responsible for the rise of the Empire and later the First Order in the first place, so maybe ending it could mean peace....and maybe, perhaps, this Project Luminous is some attempt to revive the force? Kind of getting ahead of myself here but just kind of speculating.