One more reason to like @Observable: It isn't SwiftUI only. It works in AppKit and UIKit views too, so the same per property tracking spans all three frameworks.
Deeper dive in my WWDC26 talk, Use SwiftUI with AppKit and UIKit:
🔗 developer.apple.com/videos/play...
developer.apple.com
Use SwiftUI with AppKit and UIKit - WWDC26 - Videos - Apple Developer
Discover how to incrementally adopt SwiftUI in your existing AppKit or UIKit app. We'll show you how to use the Observation framework to...
