That supposed leaked Revolution game Kotaku was informed about turned out to be semi-true. Semi-true because it is a Revolution concept, yeah, but that’s all it is, a concept. The company behind Sunder: Land of Divide is called LifeSpark Studios and their email to Kotaku was basically their way of pitching the game, which they hope to get on the Revolution one day.
Follow the source link for the full story from LifeSpark co-founder Kenton Bailey, who interestingly enough runs notorious Revolution hoaxing site Playbomb. That would explain the shoddy, hoax–looking scans.