I understand that the language scrolls are an addition in Siptah. Since the release of IoS I have been finding the language scrolls in Fragment of Power chests in the Exiled Lands. Only when I grab the loot from the chests it will tell me that I have found a Fragment of Power and not a Language Scroll (or whatever they are called).
Just thought I would point this inconsistency out. I feel fairly certain Funcom already knows about it though.