Is This What 'The Last Jedi' Is About? (Spoilers)
As the article suggests, I don't doubt that a rough cut of the feature has been done for some time: there's certainly nothing spoiler-y about that, and I suspect the still somewhat recent passing of Carrie Fisher may've prompted all involved behind-the-camera to get at least a rough cut done for studio suits who would eventually be tasked with creating a storyline for Episode IX (as it's been long-stated -- even by the late Ms. Fisher herself -- that the final film in this new trilogy would've been Leia's central story).
Again, it is what it is, but don't follow the link if you don't want to know.
As always, thanks for reading ... and May The Force Be With You!