Attached are two pictures, one from the trailer, one from the BD release. It shows that the flags outside if Maz's temple have changed, specifically ones from the prequels.
Two things come to mind:
Are we certain that these changes were intentional in the BD release and not something done as a result of refining the unfinished digital effects from a trailer?
One reddit user with a pirated version of the theatrical release confirmed that the flags are the same as that in the BD release. Meaning that the flags were done differently in the trailer, then edited in post-production for the official releases.
- If they did change these flags intentionally, what might be the reasoning?
This question still holds water. Why include prequel flags in the trailer and then edit them out of the official release? Are the editors and SFX teams just toying with the community? Creating Easter Eggs for what would undoubtedly be one of the most anticipated set of trailers for the year?
What are Disney's long term plans for the pre-OT time frame? We've already started with Rogue One happening before the OT, but after the prequels. Is there a possibility that Disney could reboot the prequels with new actors, screenplays, directors, stories, etc? Speaking of, what are Disney's rights with the existing properties?
Edit: photos from imgur user ERAUAerospace