I’m guessing Deux Ex: Human Revolution will be the official name for Deus Ex 3, a prequel to the Deus Ex series. The last thing we heard about the project is Square Enix is publishing the game and producing the CG cinematics for it.
Deus Ex 3 was originally announced for PCs. Wonder if it will make its way to consoles like the other two games.
Update: Square Enix filed trademarks Deus Ex: Human Revolution and Deus Ex Human Revolution (note the missing colon) in North America.