For those unfamiliar with Card, the very first book, Ender's Game is excellent. The very first book centers around this kid named Ender. In this future world, a war is being waged against this alien race that humans are unable to communicate with. These aliens have "insect-like" qualities, and the entire world is united together in defense of humanity.
In these times, parents are limited to only have two children. Ender, the protagonist of the novel, is born under special government privelege, because they're looking for the "ultimate commander." For this, Ender's childhood is tormented -- he's an outcast -- the typical humble disenfranchised intellectual.
Eventually, they take him off to military school, ascertaining his potential -- along with hundreds of other kids. Grades are built around leadership and performance in mock war games, held in this special room, boasting anti-gravity technology and other such nonsense. Basically, Ender rises through the ranks, and eventually has his "final exam," which turns out to be a remote-controlled version of an actual war light-years off...
That's the first novel -- most people stop there, unless they find Card's writing style to be particularly fascinating. There are three sequels to this novel, which center around the family that Ender builds up and interactions between other alien species. He focuses a lot more on the general nature of humanity and lots of psychological/societal interactions. In many aspects, the "suspension of disbelief" is blown away in these later novels.
Just a while ago, Card released Ender's Shadow, which is the same story as Ender's Game, except through the eyes of an abonded genetic experiment, who also got sent to the same school.
In a somewhat predictable move, this new Card novel will focus on how humanity started to disband, once the threat of the aliens was abolished.
This extended copy is a little much for MLP, but there isn't a whole lot to discuss. This is some quality sci-fi IMHO, and if you haven't, I'd definitely recommend going out and reading Ender's Game for that vegetation period after Thanksgiving dinner. :)
Oh, and the first five chapters of his new book are available online. How spiffy is that?