After updating from iOS 18 to iOS 26, our app icon appears to have automatically received the new 'Liquid Glass' effect. We confirmed that this change occurred without us releasing a new app update.
My questions are:
Is this a system behavior where iOS 26 automatically applies the new icon style to existing apps?
If so, is it possible for a developer to control or customize this effect? I am also wondering if there are any methods other than using Icon Composer.