I think we will see a camera, but it will not be built in. Go to a bright spot, so your face is illuminated and the iPad is in shade and then look at your own reflection. You will see roughly what would be transmitted by an iPad internal camera. It is a view only an Ear, Nose an Throat doctor could love. An external port mounted camera could tilt and swivel for a more natural view.
My big beef with Skype and all the other services VOIP, is poor web capacity to support video. It is either too choppy or interrupts your video or freezes the frames in the most unflattering positions. Until the web can carry magnitude of order greater traffic, it will remain a novelty.
If Apple implements the USB drivers for webcams, it would be a far better solution. Webcams that have actual lenses, instead of being the pinhole variety, have far greater depth of field and contrast range. Even on my new MacBook Pro, the camera has such a narrow dynamic range, I have to ensure I am frontally lighted to get a good picture out that it is not burned out or looking like I am doing a secret interview for 20/20. You know, a plug in for that voice scrambler would be rather neat and round out the effect.