Google introduced a new rounded square icon requirement for the Google Play Store back in March, on Android and Chrome OS. App developers can now immediately choose to enable the new icon specification, with the Google Contacts listing featuring the updated style already .
The purpose is to bring consistency and a cleaner look to Google Play on different UI layouts, form factors, and devices. With Google dynamically adding rounded corners and drop shadows to icons, it prohibits transparent backgrounds. This applies to the Play Store on Android smartphones and tablets, and Chromebooks.
The Graphic Assets section of Product Details within the Google Play Console, notes how the mandatory change will come into effect on June 24th. Developers can begin uploading the updated icon style today, per the previously announced timeline.
Developers that are ready in fact can use the new icon specification right now. One example of an updated listing on the Play Store is Google Contacts. Developers can of course continue to leverage their existing art until the deadline.
Old icons that don’t meet the standard by May 1st cannot be uploaded and would not be accepted. By late June the new icons must be added else Google will automatically convert the original icons to a “legacy mode.” The legacy mode places an existing icon of any shape into a white rounded square.
This change does not apply to Google Play for Android TV, Android Auto and Wear OS, or any other APK launcher icons on any platform.