Apple unveiled on June 4th iOS 12 at WWDC . iOS 12, the next version of iOS will hit Apple devices in the autumn of 2018. According to Apple, iOS 12 will run on on these devices:
iPhone 6/6 Plus and later
iPad, 5th generation and later
iPad Mini 2 and later
iPod Touch 6th generation.
If your iPhone or iPad currently runs iOS 11, it will receive the iOS 12 update when the update rolls out.