Apparently this is Sony Ericsson "Vulcan" X2, the successor to the original X1. One can clearly see the X Panel button in the lower left of its front and a Windows key in the upper left of the keyboard, which adds a bit more credibility to the pic. It is probably a very early prototype, or a good mockup, but in any case it's plausible, and we'll be definitely looking forward to new details on the X2.
