Making a movie out of Ender's Game has always a little like the cinematic version of Duke Nukem Forever -- it has been "in the pipeline" basically for as long as I can remember, without any noticeable progress. On the one hand, DNF did eventually come out; on the other hand, it was apparently terrible. So there's room for optimism and pessimism.
On the optimistic side, apparently the name of the actor playing Ender has been released, which seems like an important first step. On the pessimistic side, the article describes the "game" the children play as "a cross between the Quidditch matches of Harry Potter and the Jedi light saber battles from Star Wars." Umm, only in the sense that it has nothing to do with either. The game is essentially zero-g laser tag, where the laser's actually can freeze you in place. Nothing like Quidditch, nothing like light sabers.