You are correct it has been ovious from even before games release.
As holy dragoon pointed out this lore was on the SE page since pre-release.
For those who are shocked by this announcement... you shouldn't be honestly. Info taken from http://na.finalfantasyxiv.com/#/game...rysystem/magic
Thaumaturge
Death is Only the Beginning
In the hands of a skilled practitioner, thaumaturgy can be a force of terrifying destruction. At the heart of this school of magic lies the ability to call forth and command the latent aether within oneself through deep introspection.
Conjurer
In One’s Element
Conjury calls upon elemental forces present in nature and concentrates them to a potency at which spells can be weaved. Through practiced meditation on the essences of creation, conjurers draw forth and absorb aether from their immediate surroundings.
So by your quoted statement here, you agree that we all logically knew CON=WHM and THM=BLM since before even release.