I suspect they won't significantly change the size of the screen soon, because they're very keen on it being usable with one hand, but, then again, they'd "never" make a ~7" tablet, and then bowed to pressure from 7" tablets.
I think it is unlikely a wider screen will appear in the near future, but I suspect one will appear at some point, especially as the iPhone-savvy age demographic is expanding. Retina displays mean less to those whose eyes are older, and that group of potential customers is growing.
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I wish you'd stop hiding the truth. My younger brother bought an SIII this summer, and he's still waiting on the initial swipe to register. There are growing rumors that the display is just painted on.
Meanwhile, my trusty 4S actually swipes before I even touch it. Precognition is an iOS feature that puts it way ahead of Android.