Okay guys take a look at this, what the hell is going on? On the right is my shadow form tentacles as they have been for a very long time (nonglyphed). On the left is a female human shadow priest (nonglyphed), who I saw today in the class hall.
I've confirmed that in 7.3.5, the visual levels of Voidform will now always use the new models, instead of the old leviathan tails, regardless of whether Shadowform is glyphed or not.