Golfdriver has been a longtime member of the forums and is an ambassador, he knows what he's talking about. And I can also validate his statement as I develop for android.
Now then, to answer your question, it actually depends for device as official apps2sd support was dropped in android 4.0. Samsung is trying to bring it back to its flagships out of popular demand. So I don't know if the s4 mini will actually allow it or not, you'll just have to wait and see if someone more knowledgeable on the mini comes along.
Although I wouldn't expect the feature for non flagships, as the ability has to be configured differently per hardware setup. And Samsung doesn't have the time for all that with the development of tizen (or their other unbranded intel/Samsung os).
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