Watchmen movie may be postponed

I'm a big fan of this Alan Moore classic and although I'm also a sceptic and find it hard to believe that director Zack Snyder will manage to successfully translate the story to the big screen, my curiosity has at least been sufficiently stirred. I was getting genuinely excited about the film...until I heard that the ending is not going to be anything like what happened in the comic and that the movie may be getting postponed as well.