There's not really much more than the image above to go on with this one, but what you're looking at is purported to be the as-yet-unannounced Xperia Duo, which may or may not be Sony Ericsson's first dual-core phone. As you can see, it bears some resemblance to the Xperia Arc, with what appears to be a large, edge-to-edge display and a UI that's apparently been tweaked a bit from what we've seen previously on SE phones, including a different weather widget and media player controls under the dock. Of course, it is still just a single image, so we'd recommend taking it with the usual grain of salt for the time being.

[Thanks, Daniel N]