IMO a partial reason why all 6 devices got iOS/iPadOS 14 was due to COVID and how that disrupted manufacturing across a wide scale in the world in favor of healthcare, Apple included (or should I say Foxconn and whoever else involved), and since then last year everything got delayed as a result
plus even with the likes of Mini 4 and Air 2 per se performing well in regards to iPadOS 13 they got the 14th update
now when we move the clock to today in a world where we now proceeded from COVID Disrupting supply to the global silicon shortage (which is worse for Apple than COVID Disrupting manufacturing I think someone correct me if that is the case), because of the delays we’re seeing for iPad and MacBook that combining with apples focus on services like supporting older devices so they can be compatible with things like HomePod Mini, AirPods Max, find my for third party etc maybe even airtags for a device like the Mini 4 then I could see a future for said devices to get iOS/iPadOS 15 and beyond, granted I do think these SoC’s are the first in lineup to not receive a major update and instead get sporadic updates like the 1GB of RAM Devices stuck on iOS 12
thoughts... bear in mind though iPad Mini 4 can still tolerate iPadOS 14 well and I hope it gets more features to extend the device
plus even with the likes of Mini 4 and Air 2 per se performing well in regards to iPadOS 13 they got the 14th update
now when we move the clock to today in a world where we now proceeded from COVID Disrupting supply to the global silicon shortage (which is worse for Apple than COVID Disrupting manufacturing I think someone correct me if that is the case), because of the delays we’re seeing for iPad and MacBook that combining with apples focus on services like supporting older devices so they can be compatible with things like HomePod Mini, AirPods Max, find my for third party etc maybe even airtags for a device like the Mini 4 then I could see a future for said devices to get iOS/iPadOS 15 and beyond, granted I do think these SoC’s are the first in lineup to not receive a major update and instead get sporadic updates like the 1GB of RAM Devices stuck on iOS 12
thoughts... bear in mind though iPad Mini 4 can still tolerate iPadOS 14 well and I hope it gets more features to extend the device