I have been a longtime reader and collector of comics and I see some disturbing trends in this medium.. I will predict that within 10 years, comic books, as we know them today will cease to exist.
First let me say that American comics have changed radically over the last 10 years. The trend has been slowly to the Manga style of storytelling - in both story and artwork.
Not that I have anything against Manga, but I feel that American comics are losing what had made them special - their storytelling style which had been growing and evolving onward from the 1940s. This evolution had stopped in the mid-90s and the turn to Manga had begun. This influence is also seen in cartoons (Teen Titans, Samari Jack, Powerpuff, and the endless Japanese imports) and films (Kill Bill, Matrix, etc)...
Today (with exceptions of course) it is difficult to tell one comic from another with regards to the art style and flow of the story. Add that is sad...
Outside of content, technology will forever change the comic book. The entire indsutry of printed periodicals (including all magazines) is in decline. More and more information is being retrieved on the Web. Within 10 years, you will no longer subscribe to magazines... One will login to a web site for the latest "issue" of TIME, Batman or Iron Man. The "issue" will be viewed online with animation and sound effects.
Good? Bad? Not gonna happen? ... What do you think?