If so, does anyone know what the chances are of getting Latent Auras from normal scrolls?
The announcement page says that normal and awakened scrolls drop auras, but it's not guaranteed, whereas it is guaranteed for Darkened boss scrolls, world bosses, and field bosses. However, they don't give the actual odds.
Confirmed. I did a bunch of Giath normal scrolls yesterday and got some auras / concentrated stones. Thanks!