Will Swift Concurrency deploy back to older OSs?

Exactly. On macOS, it's not entirely uncommon to support versions all the way back to macOS 10.11 or 10.12. Each year dropping one version means that you can't use this feature until 5 years from now (!). On iOS, most companies (that I've worked with) require backward compatibility to iOS 12 (at least). Each year, dropping one version means at least 3 years of not using this - and to be honest this is something I've really been looking forward to...

12 Likes