Just rumors at this point, so difficult to guess the outcome.
The company seems to be "pairing" its products. As if we want to carry two (or more) Apple products.
Do they think a user wants an Iphone 5 (cellular) and and Ipad Mini without cellular?
That same user has another choice. He might decide to go with a small, regular phone in his pocket (without monthly data charges) and a small cellular tablet with data charges (non-apple if this rumour is true-which is unlikely) for facebook, twitter and email.
The more I think about it, the more this latter approach actually makes sense. A phone should be a phone and these mini tablets are for data. If the Apple mini doesn't have cellular, it's a step in the wrong direction.
(again, rumor only....it will have cellular)