https://wccftech.com/these-major-ios-15-features-will-not-be-available-at-launch/

iOS 15 will arrive sometime tomorrow and we have high hopes for the new update. Apple mostly detailed all the major features coming with iOS 15 at its WWDC event earlier this year, however, it is not likely that every feature will be available at launch. Some of these major features include FaceTime Sharing, Focus Mode, redesigned Safari, and much more. iOS 15 will be available for everyone sometime tomorrow and these are the major features that will not be available at launch.

Up until now, iOS 15 rested in the development phase and the company will finally release it officially sometime tomorrow. As mentioned earlier, Apple will not make some features available right away at launch. This is due to the fact that these features are not fully ready or working properly. The features will be available with an iOS update released later. If you are not sure, check out when iOS 15 will release in your local time zone.