Update 2019-06-04: It is happening again, this time it is offering "Command Line Tools beta 1 for Xcode 11.0". This seems to be a mistake on Apple's part again (see the accepted answer).
Apple has also now fixed the same issue which occurred with macOS 10.14 Mojave offering CLTools for macOS 10.15 Catalina. For a short time, the 10.14 catalog included 10.15's tools, but this has since been removed from this catalog and only included in the beta catalog.
I had the same problem after upgrading to Xcode 14.0 (with Monterey 12.6)! I fixed it with the command:
sudo xcode-select --switch /Applications/Xcode.app/Contents/Developer
Thank you very much!
On June 10, 2013, at the Apple Worldwide Developers Conference, version 5 of Xcode was announced.[42]On September 18, 2013, Xcode 5.0 was released. It shipped with iOS 7 and OS X 10.8 Mountain Lion SDKs. However, support for OS X 10.9 Mavericks was only available in beta versions. Xcode 5.0 also added a version of Clang generating 64-bit ARM code for iOS 7. Apple removed support for building garbage collected Cocoa binaries in Xcode 5.1.[43]
On June 13, 2016, at the Apple Worldwide Developers Conference, Xcode version 8 was announced; a beta version was released the same day. It introduced support for Swift 3.[46] Xcode 8 was released on September 13, 2016.
On June 5, 2017, at the Apple Worldwide Developers Conference, Xcode version 9 was announced; a beta version was released the same day. It introduced support for Swift 4 and Metal 2. It also introduced remote debugging on iOS and tvOS devices wirelessly, through Wi-Fi.[47]
On June 4, 2018, at the Apple Worldwide Developers Conference, Xcode version 10 was announced; a beta version was released the same day. Xcode 10 introduced support for the Dark Mode announced for macOS Mojave, the collaboration platforms Bitbucket and GitLab (in addition to already supported GitHub), training machine learning models from playgrounds, and the new features in Swift 4.2 and Metal 2.1, as well as improvements to the editor and the project build system.[49] Xcode 10 also dropped support for building 32-bit macOS apps[50] and no longer supports Subversion integration.[51]
On June 3, 2019, at the Apple Worldwide Developers Conference, Xcode version 11 was announced; a beta version was released the same day. Xcode 11 introduced support for the new features in Swift 5.1, as well as the new SwiftUI framework (although the interactive UI tools are available only when running under macOS 10.15).[53] It also supports building iPad applications that run under macOS; includes integrated support for the Swift Package Manager; and contains further improvements to the editor, including a "minimap" that gives an overview of a source code file with quick navigation.[54] Xcode 11 requires macOS 10.14 or later[53] and Xcode 11.4 requires 10.15 or later.[55]
On June 22, 2020, at the Apple Worldwide Developers Conference, Xcode version 12 was announced; a beta version was released the same day. Xcode 12 introduced support for Swift 5.3 and requires macOS 10.15.4 or later. Xcode 12 dropped building apps for iOS 8 and the lowest version of iOS supported by Xcode 12 built apps is iOS 9. Xcode 12.1 also dropped support for building apps for Mac OS X 10.6 Snow Leopard. The minimum version of macOS supported by Xcode 12.1 built apps is OS X 10.9 Mavericks.[56]
On June 6, 2022, at the Apple Worldwide Developers Conference, Xcode version 14 was announced; a beta version was released the same day. Xcode 14 dropped support for building 32-bit iOS apps.[58] Xcode 14 dropped support for building apps for iOS 9 and 10 (these versions of iOS supported 32-bit iOS apps) and the minimum version of iOS supported by Xcode 14 built apps is iOS 11. Xcode 14 also dropped building apps for macOS 10.12 Sierra. The minimum version of macOS supported by Xcode 14 built apps is macOS 10.13 High Sierra.[56]
On June 5, 2023, at the Apple Worldwide Developers Conference, Xcode version 15 was announced; a beta version was released the same day. Xcode 15 dropped support for building apps for iOS 11 and the minimum version of iOS supported by Xcode 14 built apps is iOS 12.[56]
In the previous article in this series, I showed you how to get the Xcode 5 preview and the iOS beta SDK up and running on your Mac. That enables you to start writing apps and testing them out on the Simulator.
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