My question is, will there be different classes of characters (No, not "unique" classes that only belong to each PC, but generic classes like Warrior or Mage) and, if so, will class changing be possible?
Each character will have an element, as well as a class.
Fire warrior, Fire Thief, Fire Priest, or Fire mage.
Ect, for four elements, Fire, earth, wind, Water.
They'll be a special area to change your class, somewhere in the game.