Google announced today that it will be adding localized graphic support for developers in the Play Store. Basically, this allows developers to change the pictures users see depending on what part of the world they’re in, so developers can add a lot of Christmas themed stuff to countries that celebrate it but leave it alone in other parts of the world. That’s a pretty handy marketing trick. Google did also announce on its developers blog that 2/3 of revenue comes from countries that are not the US, which gives devs all the more reason to start using tricks like this.
source: Android Developers Blog