Universal Control will not be available when iPadOS 15 is officially rolled out on Monday. Apple has now officially confirmed this.
Apple has launched the iPadOS 15 section on its own website updated. The listing indicates that Universal Control will be available later this year. The feature was announced at WWDC, but never officially appeared in beta testing for iPadOS 15 or macOS Monterey. The feature requires a Mac running macOS Monterey to initiate cursor sharing, so the later release will likely coincide with the macOS Monterey release window. Apple hasn't said when macOS Monterey will be released—all it says is "this fall."
Universal Control requires iPadOS 15 and macOS Monterey
The Universal Control feature allows a controlling Mac to pass its cursor between an iPad, the controlling Mac, and another Mac. During the WWDC demo, it was shown how the user moves a file across the desktops of multiple devices to the desktop of the controlling Mac. Apple is expected to hold a Mac-themed event in the coming weeks to unveil brand new MacBook Pro models with the "M1X" processor. The company will likely coordinate the release of macOS Monterey with this event. (Image: Apple)