As noted by MacRumors, the announced iCloud Private Relay will be included in iOS 15 and iPadOS, but Apple plans to provide the features as a public beta rather than a finalized addition.
According to Apple, iCloud Private Relay is a service that lets you connect to virtually any network and browse with Safari in an even more secure and private way. The tech giant says it ensures that the traffic leaving your device is encrypted and uses two separate internet relays so no one can use your IP address, location, and browsing activity to create a detailed profile about you.