Currently in post-production, set for a November 2013 release. It has Asa Butterfield playing Ender and Harrison Ford playing Colonel Graff. I have mixed feelings, because Ender's Game is my favorite book of all time and I don't want to see it get assraped by Hollywood. The movie is going to be based on both Ender's Game and Ender's Shadow, which take place during the same time but it seems like it's a lot of material to condense into a two hour film. Also instead of being preadolescents the script has all the child characters as teenagers, and instead of taking place over a span of 5-6 years it's been condensed to 1-2 years.
Your move, Hollywood. If you fuck this up I'll be a sad boy.