I don't know. I still don't see the need of a rear facing camera on the next iPad. I get the whole front facing camera for use with FaceTime and PhotoBooth, but not a rear facing camera (call me wrong). I mean it makes sense on devices like the iPhone and the iPod Touch (which took forever and a day to add for the iPad Touch) because they are great photography and shooting video. But are you really going to be using the next iPad for that? Its not practical...its a 10-inch device, but that's just my opinion.
Just because you do not have a use for a rear facing camera on the iPad doesn't mean everyone else is in your shoes.
I for one have a huge need for one, it would be very productive for my needs.