USA Today, and countless websites have that promo pic after yesterday.
And Kilmer was a pretty decent Batman but horrible, horrible Wayne. And forget Clooney... Clooney plays one part in all of his movies: Clooney. Good in movies that give him interesting stuff to do, though, like From Dusk Till Dawn and Solaris.
Christian Bale has an imposing enough figure for Batman (see Equilibrium and Reign of Fire) and judging from American Psycho, can probably do a hell of a distracted, cocksure Wayne I'd wager, perhaps better than Keaton. Excellent casting choice.
Not sure about Brandon Routh as Superman/Kent, though. Maybe he's got something we haven't seen yet, but he's only 24 and looks 17 in some photos.