The time for wild speculation is now!
From the tracking code in the URL -- and the fact that the OM-D E-M5 is currently the top in the Olympus line -- it looks like they're suggesting a new OM-D model.
The page has the logos for Four Thirds and Micro Four Thirds, as well. So, we've been given a full pass to speculate as wildly as we wish. Have it it internet. Do you think they have something that's going to "herald a whole new world of photography?"