It's pretty much a certainty that the next iPad will come with at least a front-facing camera. Now that FaceTime works on the iPhone 4, iPod Touch, and all Apple computers, not having FaceTime available on the iPad seems inefficient. At least one analyst is predicting a rear-facing 5MP camera for the iPad, too.
Additionally, the next iPad may come with a mini USB port instead of its current 30-pin connector. A Taiwan-based source claims production will begin in February.