The as-yet-unnamed Avengers 4 wrapped filming this past Friday, October 12, marking the end of an era for many actors who have been portraying a super-powered member of the Marvel crew for the better part of a decade. To mark the occasion, directors Anthony and Joe Russo continued their habit of tweeting cryptic images with text that hints at some sort of clue as to the new movie's plot...
What on Earth is the shiny blue shape in the Russo brothers' tweet? Fans immediately began sleuthing.
Most remained confused, however.
There were prominent theories, some more feasible than others.
Many seemed to believe the image was some sort of coffin or body chamber.
Of course, a large portion of Marvel fans found the only way they could express their perplexity was through some well-chosen images.
This isn't the first time the Russo brothers have teased fans with hidden messages. In September they tweeted this image:
Fans then had to figure out what on earth they were supposed to be looking hard at.
Perhaps the message was hidden in plain sight...
Or perhaps the detail is a small one, nearly hidden from view.
The theories went on and on!
Only one thing is certain: Avengers 4 is going to be a blockbuster cinematic event. No one knows which heroes will emerge triumphant and which will bite the dust, but fans are going to turn out in droves to find out. Prepare yourselves, world!