When exporting an icon using Icon Composer Beta for macOS 26, a light, dark and tinted versions for macOS are created, but I was not able to find how to use them on the Xcode Project. I also tried finding something pointing to that on documentation, but I was not able to find anything.
I see that system apps have light, dark and tinted versions on the first beta of macOS 26, which leads me to believe it would be possible for third-party apps to do that same.
You can drag the Icon Composer file to your Xcode project to use it. Add your Icon Composer file to an Xcode project is the documentation you're looking for.
— Ed Ford, DTS Engineer
