Director Rian Johnson shared a photo from Star Wars: Episode VIII today of what looks like Luke Skywalker’s cape with the caption:
In the home stretch.
Background is probably a set from Ahch-To if we had to guess. By the sound of things it appears as if Star Wars: Episode VIII’s shoot is nearly completed.
I’d say it’s for the photoshoots? John Boyega recently posted an image saying he went to a VIII photoshoot.