Personally, I'm more dismayed by this change:
> Apps that haven’t been updated with Tahoe-compliant everything-fits-in-a-squircle icons are put in “squircle jail” — their non-Tahoe-compliant icons are shrunk and placed atop a drab gray Tahoe squircle background, to force them into squircle compliance.
I've been replacing some app icons with their older, non-square versions for years (Firefox is probably my favorite). Will be disappointing to lose that option -- I've never understood why Apple feels the need to standardize app icons like this.
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