Android will soon be able to theme every app icon, and Google Play won't let developers opt out

Developers must now agree to let their Android app icons be themed or they won't be allowed to distribute on the Google Play ...
The Droid Guy

How To Set Custom Icons For Your Android Apps Tutorial

Use a Square Image with a Transparent Background: For optimal results, use a square image with a transparent background. You can find such images online or create them using photo editing tools.

Android 16 QPR2 Beta 2 rolls out with developer verification, OTP protection, custom icons and more

Google has released Android 16 QPR2 Beta 2, confirming that the API surface is now locked and app-facing behaviors are finalized. Developers can now safely adapt their apps to the latest features ...
9to5google

What Android apps do you want to have themed icon support? [Poll]

Material You themed icons in Android have come a long way since their debut in Android 12, with many more apps now supported. But, still, there are a lot of Android apps without themed icons? What’s ...