More walls have been added in the hub at Disneyland. There are sets from near the Corn Dog Wagon all the way around to Matterhorn Way. The sidewalk and walkways from the Plaza Inn to Tomorrowland are all behind the walls and not accessible. They are working to reconfigure the planters and widen the walkways in the area. Here are some ground level pictures of the current walls.
From the Astro Orbitor you can get a better view: