So the rumors proved to be true. Dell introduced a 5-inch mini-tablet PC at CES, although the device was a "concept," which is a step below prototype. In fact, the only thing Dell has said about its tablet is that it has a 5-inch display and will be marketed as a companion device for PC owners. That's it. Nothing about the processor or OS or connectivity. However, Dell also introduced its new Android-based Mini 3 smartphone with AT&T 3G wireless support, so that should provide some clues as to how the 5-inch tablet will look when -- or if? -- it's released.