Not the first time this was suggested, don't think it's gonna happen. It took forever just to get a normal shield in the game. Your best bet at dual wielding is either
A: Being an Orc with the Berzerker class, which allows you to attack again if you kill something.
B: Become a spellsword/battle mage kind of character, which tecnically allows you to wield a spellbook and a basic sword effectively, and tecnically counts as dual wielding.