Right now, only one bundle for the Kinect has been announced with an Xbox 360 that features 4GB of internal storage. Eagle eyes, however, have spied a listing for another bundle on the side of the box pictured for the 4GB bundle.
This new bundle will have a 250GB hard drive, a glossy finish, and a headset included. A notation also says that the hard drive includes game and demos.” It is unknown if a copy of Kinect Adventures will be included, though it seems likely given the fact that the game is bundled with all other versions of Kinect.
Source: Joystiq