We implemented support for icon masking that Google Chrome just shipped last week. This allows android to change the shape of your app’s icon to fit in with the other apps on the users device, whether they are square, rounded rectangles, circles, teardrops, or any other shape. For the time being this means for optimal results you should include some margin around the content of your icon, so when the icon is cropped on an android device it looks better. We will implement some changes to make it easier for you to control this in the long run.