Edit: Finally found a note about the poster on the USA Weekend website, so it won't be in USA Today but their Sunday newspaper supplement. Edit 2: Had to remove the image. That drawing of Tony Stark disturbs me. It is awful.
And speaking of Marvel Comics, on their website they're touting a faux long-lost 1940's comic strip of Captain America. Spoiler: It doesn't look anything like an old comic strip, unless the 1990s count.