As you can see, two are character posters, featuring protagonist Anna and her sister Elsa, respectively. Anna looks a bit too much like Rapunzel from Tangled, but the design on her, and especially platinum-haired Elsa, is still really well done.
Frozen opens in North American theatres on November 27, 2013.
Update (10:21 PM): Disney has asked me to take all three posters down and I have complied. They tell me that they are "fan made" with images that are "not official". First Showing reports that the posters were "made from old character designs".