Because, well, people keep asking Final Fantasy XIII producer Yoshinori Kitase about it. And since he's a polite guy, he keeps answering those questions. Aw, that's nice of him!
Well it is if you live in the Kotaku time zone at least.
While these Famitsu images themselves are not brand new, the high quality scans of them are. They're the best FFXIII images you'll get until Square Enix releases them officially.