Reading up on the tower, there's a 17th void, the void that surrounds the wheel. Since all planes of Oblivion are fragments of that void. Is that void the Aetherius, or is it something else. Since Aurbis is called Aetherius, and the void surrounds Aurbis. I'm lead to belive that the void is not the Aetherius.

We know that the void is not empty, but rather lacks stable form. So, does this mean that in the void there might be new Daedra/Aedra 'there'? If 'there' isn't the Aetherius that is.