The official PlayStation site reveals that the PS4 will come pre-loaded with The PlayRoom, which includes a number of minigames that make use of the PlayStation Camera and new DualShock 4 controller. However, since the game requires the PlayStation Camera, which isn’t bundled with the console, it won’t be playable unless you also pick up the peripheral.
The video below demonstrates the features of the game, which shows actual footage from the game, as seen from the PlayStation Camera. You can read more about the game here.