The iPhone 5c is not 64 bit, so I don't think this is the "year of 64-bit integration." Ditto Touch ID. Maybe next year.
The big unanswered strategic question is whether the mini really is just a smaller iPad, with no other differences. If the answer is "yes, and right now" then either the mini has to make huge technical leaps, or the iPad 5 gets held back to let the mini catch up. If the answer is "never" then the mini stays a generation or two behind. I think the strategic answer is "not yet" meaning that the two mini and 5 are not technologically similar, but some gaps will be closed, probably in order by retina, 64-bit, then TouchID. I just can't see the mini absorbing all those changes at once.
Another unanswered question is whether the M7 chip goes to iPads. This would not be about workout apps, but rather an extension to location tracking indoors where GPS is less reliable, and precise location matters a lot. This could make iPads of any size much more interesting in retail or warehouse applications. I assume that the M7 requires the A7, but would not require retina.
Magic Eight-ball says "answer unclear, try again later.'