Apple unveiled iOS 13 at its June 2019 Worldwide Developer Conference (WWDC). Apple wasted no time getting into the nitty-gritty details of the new mobile operating system, and had quite a few surprises like splitting up support for iPad and iPhone into their own unique OSes with separate features for the first time since the iPad was released.
From the cheat sheet
This cheat sheet looks at specific features, availability, compatible devices, and release history.
WHAT IS IOS 13, AND WILL IT WORK ON MY DEVICE?
iOS 13 is the 13th major iteration of Apple’s mobile operating system called iOS. The OS can run on the following iPhone, iPad, and iPod Touch devices that are available as of this writing.