Rune = Monk, Gem = Bruiser, based on who got the discoveries. The GM updates are not drops. They are auto updates. Those items are for the masters. The three discovered so far are for Templar (Cleric Stored Essence) Fury (Druid Stored Essence) and Mystic (Shaman Stored Essence) We wont know if it is a different item by subclass/profession until two of the matching class types get theirs, meaning we either need two to disco or an Inquisitor/Warden/Defiler update.