https://arstechnica.com/gadgets/2018/06/ios-12-announced-with-focus-on-improved-performance/

SAN JOSE—iOS 12 is coming to iPhones and iPads later this year, and as expected, it primarily focuses on performance and stability, with a few new features. The new software was announced during a keynote presentation at Apple's annual Worldwide Developers Conference (WWDC), as expected.

Apple says the update will be available on all the same devices as the current iOS 11 release, and that the company is putting a particular focus on ensuring the update works smoothly on older devices such as the iPhone 6 family.