They've finally made an announcement for Ender's Game. It is now scheduled for release to theaters on March 15, 2013. A year and half nearly? Good grief.
Gavin Hood is director, but I haven't seen anything about casting yet, other than they have started casting calls.
For those of you who might not know, Ender's Game was written by Orson Scott Card, published in 1985 and took both the top prizes in Sci Fi for 1986. We've been waiting ever since for a movie version. Now to hope they don't screw up.
Unfortunately, Hollywood can frack up anything.