True or false? Your final app icon asset should be a full square because Google Play dynamically applies rounded corners.

This statement is true. Google Play automatically applies a mask to your app icon, which includes dynamically rounding the corners and adding a shadow. Therefore, your final app icon asset should be a full square (512x512 pixels, 32-bit PNG with an alpha channel) without any pre-applied rounded corners or shadows. If you include rounded corners in your submitted asset, the Play Store's masking will result in double rounding or an inconsistent appearance.