According to a member of ComicBook.com, they’ve managed to sneak onto the set of the film in Atlanta, and watched the filming for a little while. What he saw was a scene in which Captain America was carrying a prop cut-out of Thor’s Hammer, which apparently looked like it was going to be replaced with CGI later. He was facing a group of soldiers, but it wasn’t entirely clear what the purpose of the scene was.
However, if this is true, it raises some interesting questions. For example, it’s not clear if Thor will be included in the new film or if we’ll just see his Hammer – which is entirely plausible.
But it’s also interesting to wonder how Captain America managed to obtain the Hammer in the first place, and how he was able to hold it without any apparent problems. This could indicate some curious developments in the background, so it could turn out that the new movie offers a lot more in the way of its plot and character developments than we’re thinking.