Happy they kept the 13 mini around, provides some hope about a 15 mini coming next year maybe.
I don’t agree. And, the fact that the 12 Mini is gone sends the clear message that they don’t intend to wring any more margin from the form factor.
I would put the chances of a Mini returning to the yearly “flagship” device lineup at just about zero. Furthermore, I’d expect the 13 Mini to exit the lineup a year ahead of its larger sibling just like the 12 Mini did this year. That, to me, all but closes the door on the possibility of the SE graduating into the Mini form factor next go-round as well.
If there’s a new small phone in Apple's future (and right now it doesn’t look good, IMHO), it would likely be its own thing with a price and feature set somewhere between the next SE (6.1” LCD, 11-based if rumor holds) and the non-Pro. That doesn’t mean it couldn’t borrow the same 5.4” Mini form factor - it definitely could. But it would probably not have the latest tech, other than processor. And it would probably be $600 (or more), just like the 13 Mini is now, and 12 Mini was until it was discontinued today.