iOS Version Release Date History — Cool Infographics
A History of Software Updates for All iPhone Models to Date - Office Timeline blog
iOSNAM on Twitter: "Goodbye 2017, Hello 2018! At this first day of the new year we look back at the release dates of iOS versions and betas in 2017. This was iOS
iOS 16 News: Release Date, Features & iPhone Support - Tech Advisor
How long does an iOS beta period last? - 9to5Mac
iOS 16: latest version, beta news, problems, fixes and new features | Macworld
iOS 15 - Wikipedia
What is Apple's policy for supporting security updates on older versions of iOS? - Ask Different