As for Ender's Shadow: On the one hand, Asa Butterfield recently stated that there was nothing of Ender's Shadow in the movie. On the other hand, he did another interview during the same event where he confused Ender's Shadow with Speaker for the Dead. So maybe he thought of Speaker for the Dead, to...

Unpopular opinion: I actually think it's a good decision to leave out the Locke and Demosthenes storyline. Even when I first read the book, that part felt apart, kind of stuck on, or maybe like a dramatic intermission. The story was about Ender, and I got the impression that Locke and Demosthenes we...

According to Card from a while back, no. The audience will know that Mazer's 'testing' arc will be the real war, but Ender is not aware of this. Trades shock value to the audience for dramatic irony. Makes sense seeing as a plot twist that large, old, and powerful is already known to a ton of peopl...