According to this
Cinescape article
, 2004 will see the release of
the Batman vs. Superman movie. With the
sequel to Spider-Man already scheduled for
the first Friday in May of that year, it looks like
it’ll be the third consecutive year for big superhero
movies. (We’ve got Spider-Man this year,
Daredevil, The Hulk, and X-Men
next year, and Spider-Man 2,
Batman vs. Superman, and possibly Ghost
and Fantastic Four in 2004.)