First of all, before you read further, I want you to take a deep breath. I mean a really deep calming breath. The title of this thread refers not to the actual attraction being open, but a door to the attraction area which was wide open.
Yes, the door behind Tarzan's Treehouse, to the left of the Disney Gallery staircase, was wide open yesterday. You could see water in the attraction, and although most of the lights were off, there was a blue light, and an overhead dim gaslamp style electric light on.
You could smell the familiar musty air of the attraction, which I've sorely missed.
I managed to snap a few pictures by sticking my camera in the doorway, which I should be able to post tonight or tomorrow. Things look great for the opening on the 26th! (Or thereabouts).