I think Uni is being quite smart in not releasing concept art. They still create a lot of anticipation and intrigue around their upcoming projects, but they don't set
specific expectations. This way they avoid any confusion or disappointment that may stem from seeing differences between concepts and the finished product (if any). Also, this way, they have an element of mystery and surprise, and the finished product has a bigger impact.
Anyways, they're pulling out such amazing work in record amounts of time, forget the concept art! Before you realize it, you got the
actual attractions standing right before you