Though Sony didn't really go too much into depth around this, they did say that some of the support will include video sharing and interaction with other players. However, the bulk of development will go to the PS Vita where players will be able to stream games directly from the PS4 to the Vita. The integration is so tight that a game running on the console can be stopped and resumed on the Vita. Great for those moments when someone else wants to commandeer the TV in the middle of your game.
5. There Will Be Support For Smartphones, Tablets And The PS Vita