A great site for information about movies in various stages of development is the coming attractions site:
http://corona.bc.ca/films/mainFramed.html
One of the genre categories that they have listings for is comic book movies. Here are the Marvel titles that are listed and their current stage of development (you'll find a lot more information at the site) :
Ant-Man (development hell - typically means that the property has been optioned for a possible film, but there is little or no actual work being done on it at the moment )
Black Panther (development hell, Wesley Snipes wants to make it)
Blade 3 (script stage)
Captain America (development hell)
Daredevil (post-production, opens Feb. 14, 2003 )
Deadpool (script stage)
Doctor Strange (development hell)
the Fantastic Four (development hell)
Hulk (greenlighted, opens June 20, 2003)
Iron Fist (script stage, Ray Park is supposed to star)
Iron Man (development hell)
Luke Cage (development hell)
Man-Thing (script stage)
Morbius (script stage)
Power Pack (development hell)
the Punisher (development hell)
She-Hulk (dead- some cool photos though!)
the Silver Surfer (development hell)
Spider-Man 2 (in production, opens May 7, 2004)
the Sub-Mariner (development hell)
Venom (limbo)
Werewolf by Night (script stage)
X-Men 2 (greenlighted, opens May 2, 2003)
X-Men 3 (movie rumoured)