Marvel has released several new clips from upcoming superhero films, including the July 7 release of "Spiderman Homecoming," which contains a guest appearance by Tony (Iron Man) Stark and a brief cameo by Stan Lee.

A teaser has been released for the forthcoming "Black Panther," too.

Meanwhile, DC has a slate of upcoming attractions too, such asĀ  Aquaman, Shazam, Flash...