Hard to make a definitive statement about it, because basically since 2007 Apple has
always continued selling previous gen models.
That said, the article makes sense and based on all the rumours surrounding iPhone 16 and iPhone SE 4, it wouldn’t be surprising.
The iPhone SE 4 is also rumoured to use the same chassis as the iPhone 16. Right now, Apple has to maintain a lot of different production lines (iPhone 8-line, iPhone 12-line, iPhone 13/14-line and iPhone 15-line).
If they go ‘exclusively’ with 16 chassis, they can drop all these lines which will save a lot of money. In addition, now there’s a wide range of A- and M-chips still across a wide array of products. They can basically shut down all pre-A18 chip productions if they move the new base iPad 11, iPhone 16 and iPhone SE 4 to A18.
Initially, that might be more expensive, but maybe the cost per unit is actually cheaper: they can place one big order for just the A18 chip (plus maybe some small variants), instead of a smaller A18 order + A17 Pro order + A16 order + A15 order + A14 order (which they are doing today with their current line-up).
Regardless, even if they keep the iPhone 15, they can drop all those other older lines as well.
Again, I think they’re moving to the ‘iPad strategy’ as that’s been a commercially more succesful strategy where people tend to choose for a more expensive model.
Budget, ‘Air’, ‘Pro’. = SE4, 16, 16 Pro.
And maybe keep the iPhone 15 around unofficially, through carriers and third party retailers.