There was an article a while back in either Time or Newsweek that said Eastwood is currently working on TWO MOVIES based on Flags of Our Fathers/Iwo Jima. He started the project doing a movie from the US perspective and then thought "You know, it would be really interesting to do a companion movie from the Japanese perspective". Here is a website related to the project:
http://www.flagsofourfathers.net/
I can't wait to see both. I think Eastwood is really hitting his stride as a director in his old age.