Version 9.2.0 of package Swift-Mode has just been released in NonGNU ELPA. You can now find it in M-x list-packages RET.
Swift-Mode describes itself as: ================================================= Major-mode for Apple's Swift programming language ================================================= More at https://elpa.nongnu.org/nongnu/swift-mode.html ## Summary: Major-mode for Apple's Swift programming language. ## Recent NEWS: [Not provided 🙁]