It turns out that the voice is none other then Andy Serkis. Serkis, known for his roles The Lord of the Rings and Dawn of the Planet of the Apes, was announced to be a part of this upcoming film months ago. Now with the new trailer, we may have an idea what Serkis' role in The Force Awakens may be. If we can take anything from this update, it is that Andy Serkis is a talented actor; but that may go without saying.
Star Wars Episode VII: The Force Awakens hits theaters on December 18, 2015.