According to the public profile for a CG artist, not only is a Fallout 4 trailer in the works but it is being worked on by Guillermo del Toro's production company. This is all according to the LinkedIn profile for a contract 3D artist, who listed his previous work experience with Mirada Studios, the name of del Toro's production company.

In the listing (seen below), he says he did some contract work as a 3D artist on a Fallout 4 cinematic trailer.


Some of the contractor's other works include cinematics for Far Cry 4 and The Elder Scrolls. He also worked on Forza Motorsport and even The Avengers.

Naturally, since Bethesda has not yet actually announced Fallout 4, we can merely list this one as a rumor. However, it needs repeating that another rumor surfaced just three days ago saying Fallout 4 was going to be shown off at E3 in a fairly major way. I mean, I'm not normally one to say that "yes, this rumor is true" but, I mean...