Two major superhero blockbusters will hit theaters in May, in the shapes of The Amazing Spider-Man 2 and X-Men: Days of Future Past. Both are expensive comic book movies that have a direct sequel already in development and scheduled for release in 2016 (The Amazing Spider-Man 3 and X-Men: Apocalypse, respectively); furthermore, the pair may serve as springboards for spinoffs arriving in the future. That includes a Venom and Sinister Six film set in Sony’s Spider-Man movie universe, while the list of potential X-Men spinoffs includes X-Force and a handful of solo character films (see: Deadpool).

In other words, there’s a lot riding on these movies doing well at the box office, which accounts for the sheer amount of marketing push behind each film thus far – with plenty more ahead. Today’s list of items to add to the pile include some behind the scenes photos from post-production on the Amazing Spider-Man sequel, along with yet another intriguing Days of Future Past image that hints at multiple timelines in the story.

Director Marc Webb recently Tweeted the following Amazing Spider-Man 2 images, which offer a look at the post-production crew and the facilities where editing procedures like sound mixing and 3D processing are currently underway on the sequel. Webb spent the entirety of the film’s production releasing images through his Twitter account, so give the man credit – he’s been doing his part to keep fans engaged in the film’s progress (through the magic of social media).

Meanwhile, although Days of Future Past director Bryan Singer hasn’t quite kept up Webb’s Tweeting pace, every image that he has released for his new X-Men movie (the third in the franchise which he’s directed to date) has raised intriguing questions about the film’s time-travel storyline.

Take, for instance, this new behind-the-scenes pic of Hank McCoy (Nicholas Hoult) during the 1970s – last time we saw him back in X-Men: First Class, Hank’s experimental attempts to deal with his mutation left him permanently stuck in his blur-furred Beast form. Yet, despite that, here he is, looking decidedly human in ’70s clothing to boot.

One theory we’ve floated about why Hank still looks like a regular human in certain Days of Future Past pics and is all Beast-y in others – or why young Charles Xavier (James McAvoy) appears to be no longer wheelchair-bound in certain images – is that there will be different timelines, as a result of Wolverine (Hugh Jackman) making multiple trips back in time, in order to prevent the event(s) that set in motion a dystopian future.

Such a twist in the screenplay by Simon Kinberg (Sherlock Holmes) would not only make Days of Future Past a callback to Singer’s days of weaving intricate and fascinating narrative webs on films like The Usual Suspects (and, to a lesser degree, Apt Pupil), but also help to account for discontinuities between the present-day X-Men trilogy, X-Men: First Class and the franchise’s black sheep spinoff X-Men Origins: Wolverine – which is to say, those that came about before 20th Century Fox got serious about this whole X-Men shared universe thing. As such, we’re crossing out fingers in hopes that at least part of this speculation turns out to be accurate.

The Amazing Spider-Man 2 hits U.S. theaters on May 2nd, 2013. X-Men: Days of Future Past arrives three weeks later on May 23rd.

Source: Marc Webb, Bryan Singer