This appears to be no more than a cameraphone snap of some Amazing Spider-Man character posters. According to Stark Industries, who don't reveal a source (though I'm, prepared to bet it was somebody on Twitter or a forum somewhere) these were sighted in Japan, which is where the film will actually be opening first.
The Rhys Ifans one is quite easily the best, I'd say. Not that I'd hang it on my wall.
Thanks to Coming Soon for the heads up.