Disney just pushed the walls back a bit next to Tatooine Traders, revealing a dead end of sorts at the Star Tours gift shop. As seen in the following photo, there used to be a path that ran directly next to Tatooine Traders, taking guests to Muppets Courtyard.
With the opening of Grand Avenue, this path is now unnecessary and has been closed off. Grand Avenue is to the right of the walkway split in the following photo.
A look over the wall shows a new brick wall, used to hide a backstage area behind the Grand Avenue gate.
Finally, take a look back with our walkthrough of the area from back in August 2016.