MacOS application icon only for Big Sur

Since Big Sur application icons have a different style than the earlier OS's, I want to add a new icon for my app, but only for Big Sur. Is there a way to set an icon for MacOS 11 and the old icon for the earlier OS's ?
Thank you.
Accepted Answer
No. You can change the icon at runtime and do that only on Big Sur. That's what I'm doing. One day I might change it when more users are on Big Sur.
Thank you, do you set it in applicationWilFinishLaunching ? with -[NSApplication setApplicationIconImage:] ?
MacOS application icon only for Big Sur
 
 
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