This is an extreme custom Arabian. With a turned head, pinned ears, carved nose and facial detail, an opened mouth showing teeth, a sculpted split forelock, refined mane with bridle path detail, added hair details, a flipping loose tail with lots of added hair detail, an exposed tailbone, and hind anatomy. Available on any of the available DAH colors and patterns.
This same customization was brought back in 2014: https://www.stonehorseref.com/node/21947.