There were a few pieces of art from the non-Indiana Jones and Encanto area of the land. Granted, they only flashed briefly, but they were not just the vague/impressionistic concept art WDI sometimes does to conceal details, and I could not clearly clock Coco in any of them.
It’s always curious to me when Disney flashes concept art on screen but doesn’t release it (same thing happened with EPCOT Central Spine 1.0 in 2017, Reflections in 2019, and more that I’m probably forgetting). I assume it’s because the exact plans for that front section haven’t fully firmed up.
That’s why I equivocated on the Coco part of this post with the line that it “seems to maybe” be part of the reimagining.