This question, and my answer, should be in the tribute store thread, so mods please move it if you'd like.
No idea if this is accurate but according to
WDWNT:
"Managers at the location have stated that the store is set to open as early as Friday or this weekend, however it will do so in phases as they get closer to the Halloween Horror Nights event. Each set of days, a new room of the store will open, slowly revealing the event’s houses, scare zones, and themes.
We believe the first section of the store will house the “30 Years, 30 Fears” retro merchandise collection".