Bethesda has just released a trailer for their upcoming DLC for Fallout: New Vegas titled “Old World Blues“.

“In Old World Blues you will discover how some of the Mojave’s mutated monsters came to be when you unwittingly become a lab rat in a science experiment gone awry. You must scour the pre-War research centers of the Big Empty in search of technology to turn the tables on your kidnappers or join forces with them against an even greater threat.”

Old World blues is the third piece of DLC for Fallout New Vegas and we be released next week on July 19th for Xbox 360, PS3 and PC.