Starting from version 5.3, the development environment Swift Apple will also be available for Windows users.
On the official blog Swift.org, Apple does know that Swift 5.3 will bring with it various improvements in terms of performance and that the development platform will also be available for Windows.
Originally created only for the Apple ecosystem, Swift is the first open Linux, and is now preparing to arrive on Windows PC. Then open the door to the development of the iOS app, iPadOS, watchOS, tvOS and macOS developers who are not in possession of a Mac.
At the moment we do not know what will be the other news, and when Swift 5.3 will be released, probably in June after the WWDC 2020.