Swift 6.3 Released

Swift is designed to be the language you reach for at every layer of the software stack. Whether you’re building embedded firmware, internet-scale services, or full-featured mobile apps, Swift delivers strong safety guarantees, performance control when you need it, and expressive language features and APIs.

Swift.org
> Swift 6.3 includes the first official release of the Swift SDK for Android.

Anything similar for Windows and Linux?

For Windows there's a 5 year old blog post: https://www.swift.org/blog/swift-on-windows/

For Linux there's a guide for GNOME: https://www.swift.org/blog/adwaita-swift/

It would be really nice if instead we could just do one style of development and then ship a set of libraries as used to work for OpenSTEP (which was why it had "OPEN" in the name).

Introducing Swift on Windows

The Swift project is introducing new downloadable Swift toolchain images for Windows! These images contain development components needed to build and run Swift code on Windows.

Swift.org