Of course, the big attraction/nemesis for this installment are the giant, mutant-hunting robots; The SENTINELS! Created by Bolivar Trask (played by Game of Throne's Peter Dinklage), the towering robots were created as a defense force for humanity against the perceived "mutant threat", and could perform a DNA scan on any person in a crowd and determine whether or not they possessed the "X" or, mutant gene. Naturally, the association to be made is the parallel with Nazi Germany and the holocaust. This is sure to rankle Magneto more than the others as he is a concentration camp survivor.
Now 20th Century Fox has launched an elaborate website for Trask-Industries.com to give more background on the company and history of the Sentinel program. Fans of the superheroes have long wanted the Sentinels to appear in Fox’s film franchise and will finally get their wish in the seventh film, out May 23, 2014.
Until then, I have scrounged up some early concept art, models, and a couple of actual screenshots from the film to give you a better look at "humanity's last hope".