You can see in the video below, they walk through several different shots, assigning numbers to the cameras and revealing the models at the end of the video.
Additionally, using the power of the 4K resolution that the GH4 delivers, they recut a version of the video to be a more traditional music video (instead of a camera test) using only 2 static shots from the Panasonic GH4 and pan and scan to vary the shots at a lower resolution.
The 4K Panasonic GH4 ships this month for $1698. It is available here at B&H Photo.
[via Hillbilly Grip Truck]