It is what appears to be box artwork for a SEGA copy of The Secret of Monkey Island. What's weird about it is that Monkey Island was released on the SEGA CD, but not the SEGA Megadrive (or Genesis, if that's what you prefer.)
I can't tell you the source of the image, but apparantly it's on a rolling slideshow on a big plasma screen somewhere in the LucasArts complex. This photo was taken on a mobile phone as it rolled past, as the photographer experienced what I can only assume to be blind disbelief.
It all sounds crazy, and apparantly 'the woman' at LucasArts didn't know anything about it. Perhaps LucasArts were working on a Megadrive port of The Secret of Monkey Island and then canned it when the SEGA CD was announced? It's possible I guess.
For completists the original photo can be found here, albeit in a cropped form.
(PS. I don't know how to work the image system, but I figured this news was worth sharing as soon as I found it. Sorry if I've messed up our galleries!)
Update: Yes of course, it was an april fool. View the real (and very clearly fake) image below.