You know, I'm honestly not certain. It might have existed the switchy way previously while they created the vision quests. If not, then it's probably a victim of vague information.
While there's no concrete information, we do have
icons to look at.
The bubbles on the top of the hotbar are the Shaman "stances" that a mid-40s Shaman had available
It's a bit blurry, but the icons look like:
(Casting) (Nuking) (Disease[Fly]) (Fish?) (Badger/Wolf?)
The spell icons look like: Attack toggle, several melee attacks, a lightning spell, a heal, a debuff/poison, etc.
Now this is just an assumption, but the only stance that looks like an actual "spirit form" looks like the last one, the badger/wolf type creature.