User blog comment:Spawny0908/Red Dead Redemption GOTY Edition Coming in October/@comment-1265875-20110913170428/@comment-3455248-20110913175736

Probably just expert aim. Most games give you the option of setting a difficulty level at startup, but expert aim is kind of hidden in RDR if you don't specifically look for it. This may just be adding a "Normal" or "Hardcore" menu at startup to help make the choice more obvious. That's my guess.