Yeah, I’m expecting 7 years, but given that the jump from the 2020 intel Air to the M1 Air was bigger than the jump from M1 to M4, it could definitely be longer this time aroundThe iOS/iPadOS support time is roughly seven years… there are Intel machines that have received the same time of support. I think most of us wish an 8 to 9 years support.
They also kept the base RAM at 8gb through M3, so RAM limitation shouldn’t be an issue for a few years (everyone complained about this, but I was happy they kept the base RAM low since they need to continue supporting M2 and M3 with 8gb)