No one knows until June.. in best case.. when the iOS 17 beta program is released.. but we can’t be certain until September..

I wouldn’t be surprised if iPhone 8 would get iOS 17.. but not iOS 18..

Yet, even if it wouldn’t get iOS 17, you would still get security updates on iPhone 8 for a couple of years more so you’ll still be safe.

If you would like to get a newer iPhone but still keep it cheap, an iPhone SE 2020 is the next best and cheap iPhone to go..