https://wccftech.com/ios-15s-facetime-shareplay-feature-will-not-be-available-at-launch/

iOS 15 can be considered a major update, given the number of features it has to offer. One of the most favorite features for users is FaceTime SHarePlay that lets you share all kinds of content with the recipient. Apple is set to introduce iOS 15 potentially next month with several sources citing September as the iPhone event month. If you are waiting for Apple's FaceTime SHarePlay feature, take note that it will not be available at launch.

Apple will release iOS 15, iPadOS 15, tvOS 15, watchOS 8, and macOS 12 Monterey to the general public next month. While there are a plethora of features to look forward to, FaceTime SharePlay will take its time to be live. Apple will wait a while and then make the feature available with a future iOS 15 update.