Go here for details: Kotaku site
Here is a quote from it:
"We received a mysterious (and anonymous) email late Friday which had what appears to be details from a yet to be announced Revolution title.
The game appears to be called Sunder: Land of Divide and looks to be some sort of first- or third-person shooter.
Instead of just bland screenshots and some worthless plot descriptions, this sheet includes detailed specs on a variety of interesting weapons and how those weapons are used with the Revolution’s new remote controller."
If you look at the bottom left of the picture the developer is blurred out but it does say "Studios" under it. Could it be Retro Studios? Is it a fake? Who really knows these days. If you look at how detailed the pics of the diagrams are, it looks pretty convincing. Take it for what it is, just a rumor and nothing more for now.
Thanks to Rawmeatcowboy for finding this story