The 1st one show Selina Kyle ( Anne Hathaway's Stunt Double ) stealing the Bat-Pod from Gotham City University. I wish this was Anne Hathaway in the official Catwoman Cat-Suit ( no release of that Costume photo yet, but stay tuned to the Bat-Blog.Com ). I think that this is only what she wears early on to steal the vehicle.
OK, speaking of Bat-Vehicles, the next wallpaper is of the Tumbler Batmobile, which will make an early appearance in the film too. Also, it's the "Camouflage" version. I guess it's not been painted black yet, ha!