The PS3 isn't getting any exclusive content, but for 90 days, players will be getting 'Saint's Row 2' absolutely free.
If you think back to E3 2011 you'll remember some big announcements from Sony about exclusive content coming to the PlayStation 3. Among the games included in the "PS3 owners get something special" list was 'Saint's Row: The Third.'
Despite giving the impression that the new content would be for the current game, the extras come in the form of a free digital copy of 'Saint's Row 2,' which currently runs $19.99 on PSN. All you need to do is redeem your online pass code and you'll be set to go.
Sony and THQ are giving you until February 13th to pick up the new game and get a free copy of the old one.
Source: PlayStation Blog