I've been thinking that same thing, as we've only seen it on the bundle box. It seems like something that would just be on that box, as well. We'll just have to see.
I noticed those pearls, too, but I didn't realize that they put the goddesses names on the cover. That's pretty cool. I wonder what all the circle stuff is for, though...
I don't know, I'm just gonna wait and see what it is rather than wonder when it will be revealed. (Maybe we'll get it at Eurogamer Expo, though. I also expect it to be a new concept art.)