Swift 5.5 is now officially released! Swift 5.5 is a massive release, which includes newly introduced language capabilities for concurrency, including
async/await, structured concurrency, and Actors. My heartfelt thanks to the entire Swift community for all the active discussion, review, and iteration on the concurrency (and other additions) that make up the release. Thank you!
How to learn more
You can try out some of the new features in this playground put together by Paul Hudson!
Swift Evolution proposals
A number of changes went through the Swift Evolution process for inclusion in Swift 5.5: