Recently, Google upgraded the Android Market, and yesterday they announced multiple APK support. With multiple APK support, developers can now upload different versions of an APK under a single product listing. Each APK can address a different need, be completely independent, and still share the same package name. Some of these differences could be versions, screen sizes, or GL texture-compression formats.
When a user looks at the app product listing, they will see the details, ratings, and comments across all the APKs since they are treated as a single product listing. When a user downloads or purchases an app, the Android Market will choose the right APK based on the user’s device.
This will make things a lot easier for developers that want to offer different versions for tablets and phones. Users are going to love this change as well since it will be a lot less searching for different versions which will result in a lot less grief.
[via android developers]