All Games Beta is a site that has specialised in publishing screens early and leak gaming news. It's not your most exhaustive source of information, but they generally post accurate stuff. Now they've published the image below without any further comment. Could it be fake? Absolutely. But we also suspect Bethesda Softworks would like to see a next-gen sequel to the critically acclaimed Dishonered.
The image seems to suggest some kind of sneak preview event or teaser trailer pre-empting a full reveal at E3 in June. A likely scenario, but again take this with a grain of salt (photographing a projected image is every fakers' best friend).