I've just update Xcode to Version 13.0 (13A233) release candidate, but now I cannot select MacOS 12 as target, nor for MacCatalyst, it only shows up to 11.3. So all the latest SwiftUI for MacOS 12 is unavailable. ios-15 is present, but not MacCatalyst 12 or even 11.4.
Is there a trick or something I have to do or download, to make macos 12 available as target, like it used to do in the beta? Alternatively, is there a way to download the previous beta version. By mistake I deleted mine.