When I read the Outline for v. 2.0, among the PDF documents about the upcoming re-haul that SE made public way back, and saw the announcement of the introduction of "Content surrounding the Twelve mythos", I took this to mean the mythoi about the Twelve.
But since then, I've read some comments in which people refer to the Mythos as some entities within the game lore, or as some alternative name for the Twelve Gods, not as the mythoi relevant to them. Some even call the rocks appearing around Eorzea "mythos," as the plural form of the world mytho.
Dictionary.com quotes the Collins English Dictionary thus:
I would like the moderators to clarify, if possible, whether the "Twelve mythos" are indeed new entities, and hence "mytho" is a new, and previously unknown, Eorzean word, or rather, whether the sentence in the outline meant instead the "mythos about the Twelve" preserving traditional English/Greek meaning.mythos (plural mythoi or (non-standard) mythoses)
-A story or set of stories relevant to or having a significant truth or meaning for a particular culture, religion, society, or other group.
-Anything delivered by word of mouth: a word, speech, conversation, or similar; a story, tale, or legend, especially a poetic tale.
-A tale, story, or narrative, usually verbally transmitted, or otherwise recorded into the written form from an alleged secondary source.
Thank you in advance.