Asherons Call: QotD – What Defines a “New” Quest?

With all the updates to old weapons, completely new boss monster weapons and minor upgrades I’ve seen it repeated there’s no new quests.

Yet, this month, the Staff of the Nomads which has NEVER truly been a quest. But this month it gaimed new lore, new mechanics, and a new reward – becoming a “quest” for the first time.

So…

What defines a ‘new’ quest? Or alternatively, how much has to change before a ‘revision’ beciomes a ‘new quest’? The lore? The locations involved (i.e. dungeon location and layout)? The creatures involved? The reward?