The information below is based on an analysis of the available data and the words of a well-known Chinese analyst Ming-Chi Kuo from TF International Securities, who often turns out to be right in his forecasts. Also, a lot of data about the new iOS 14 comes from media. Don't forget read more about iOS 14 release date.
What models will iOS 14 support? - Unnamed Apple source reported that iOS 14 will support almost all devices compatible with iOS 13: iPhone 6s, iPhone 6s Plus, iPhone 7 и 7 Plus, iPhone 8 и 8 Plus. iPhone X. iPhone XR, XS and XS Max, iPhone 11, 11 Pro and iPhone 11 Pro Max.
With the exception of the latest iPhone 5S and iPhone 6, equipped with A7 and A8 chips, respectively. If this information turns out to be true, the iPhone SE and iPhone 6s smartphones will get support for iOS 14.
iPhone 6s was introduced in 2015, and Apple devices are usually supported for 5 years. These five years end this year. The same story was with the iPhone 6, which was released in 2014 and was no longer supported in iOS 13, released in 2019.
iOS 14 supported devices:
iPhone 6s Plus,
iPhone 7 и 7 Plus,
iPhone 8 и 8 Plus.
iPhone XS Max,
iPhone 11 Pro,
iPhone 11 Pro Max,