Original von Prof. Rolex
... So we know, that there will be a new divers watch. Whether it will be a new Submariner and/or a new Sea-Dweller or maybe a watch with a completely new name, we will know for sure within some days.
One of the most recent Trademarks registered by Rolex at the "Eidgenössische Institut für Geistiges Eigentum", the Swiss Patent & Trademark Office, is a Name which could be a hint towards a new type of diving watch (Marke 531171):

ROLEX DEEPSEA