While it's already been pretty much confirmed that giant, mutant-hunting Sentinels will play a prominent role in Bryan Singer's X-Men: Days of Future Past (as they did in the comic book storyline it's inspired by), the director used his active Twitter account to provide some corroboration from the set of the film.
Tuesday Singer tweeted what is likely an extra getting a bite at the craft services table of the currently-lensing Toronto production, wearing "Trask Industries" coveralls — Bolivar Trask being the creator of Sentinels in Marvel Comics continuity. This may also add to the ongoing speculation that Bolivar Trak is the as-yet unrevealed part played in the film by Game of Thrones actor Peter Dinklage.
"I don’t really want to give too much away but the Sentinels are a big feature of this story," Fox consultant Mark Millar revealed in an interview with SFX in February. "They will be cool and this will deliver on all of the teasers. We’ve all been waiting for this ever since X-Men: The Last Stand showed us one of their heads. Now it is finally coming, and we only have to pay ten quid to see it in the cinema whereas they’re having to pay $100 million to deliver it."
X-Men: Days of Future Past is scheduled for release on July 18, 2014, with a cast including James McAvoy, Michael Fassbender, Jennifer Lawrence, Hugh Jackman, Patrick Stewart, Ian McKellen, Anna Paquin, Ellen Page, Nicholas Hoult, Shawn Ashmore, Dinklage and Halle Berry.