iOS 15 will run on every device that runs iOS 14. Yes, your 6-year-old iPhone 6S will be getting the latest version of iOS. Extraordinarily cool and yet another reason buying an iPhone is actually a great value.updating the device alongside throttling CPU to be slower are not an advantage.
Apple has introduced iOS 15 featuring new FaceTime features including screen share and movie watching, new Focus features, new Weather and Maps apps, enhanced on-device intelligence and more. iOS 15 will launch later this year and a beta is currently available to developers