While we don't yet know the new iPhones Apple will be dropping this fall — though there are iPhone 17 rumors — we do know, per Apple's site, that the phones listed below will be compatible with iOS 26. Basically, if you have an iPhone that was announced in 2019 or later, you're in the clear:

Apple opened the event by promoting its new movie, “F1,” which stars Brad Pitt and will be released June 27. The emphasis on the movie showed how the company is trying to use its legacy software business to promote its newer foray into Hollywood.