User blog comment:SLyfoX999/Red Dead Revolution?/@comment-3455248-20130203220003

Nobody (outside of Rockstar) has any info because all mentions of "Revolution" so far have been speculation or fabrication. Unfortunately, nothing concrete is known yet on whether they are even making a game, when it would be released, or what it would be about. If you consider that such a game would be as big and complex as GTA V to make and GTA V wasn't announced until four years after GTA IV was released, it might be 2014 until any real information is even known, assuming the game is actually in progress.