The universe of Final Fantasy XIII, like many of Square's others, features a world with large cities in the sky. Airships, monster and magic are also there. Final Fantasy XIII centers around a female protagonist named Lighting who's "the chosen one". Like all Final Fantasy games, you can expect epic story lines and deep emotion. At this point in the development cycle, the company has yet to divulge very much info... except these screenshots.
*Note: These screenshots cannot be linked and must be viewed on the site. Also note that the title on the page says Final Fantasy XII but it is a typographical error. These screens are from FFXIII.