I went to Walmart last night and I notice they're remodeling the store. They've moved some of the shelves around, and they're redoing the floors. In the clothes departments they've replaced the old light "wood" floors with new darker "wood" strip floors that have a texture to them. In the grocery department, they took out all of the white vinyl tile floors and did polished concrete floors instead. The green aisle signs are still up but all of the department signage has been removed and the green/yellow etc walls have been repainted in white. I think we're going to get the white walls with black and white signage.
But I don't know if the lights or speakers are being replaced. My Walmart was originally just a regular Walmart, so it has the dropped ceiling over the main store except for the garden center which is open. And the grocery section was an addition so it has the open ceilings with skylights. I assume they are keeping the dropped ceiling though as it would probably be too intensive to remove it and paint without closing the store.
Also there are still those spinner fans with three blades and switch housings over the registers in the garden center, but I don't know if they will be removed or not. There used to be two more at each entrance in the main store, but they were taken down a long time ago.
My Walmart never had much remodeling other than when they added the grocery addition, they moved the snack bar and the restrooms. Other than that mostly just paint and signage changes, and a few ceiling fans replaced and removed over the years, and in the grocery department the refrigerators and freezers got changed out at one point.
An update on this. They finished the remodel and left the dropped ceiling, speakers and lights intact. The fans are still in the garden center and I need to get a picture. Yet they added a Lasko white plastic 16" pedestal fan in that area, with a smiley face sticker on the hub. Plus they put in two HV fans of some kind mounted high on the wall and aimed at the checkouts. I'm not sure yet what brand. I'll try to get some photos. They did replace the metal halide parking lot lights with LED ones.