Google turns on the so-called incremental update principle, known as Delta. If you have installed an app on your Android smartphone and you should upgrade to a new version. Dan was formerly the full app again downloaded and installed. That's over now, when a developer makes available an update in the Play Store, Google will see the difference between the two apps in code and here is a special update file. This you do then only the difference between the two apps to download and install.
The new update feature makes for smaller apps, of course not a very big difference. But for example in games of 30MB or more when only a few lines of code have been adapted to a bug to solve such an update can suddenly less than 1 MB, while otherwise the whole app to be downloaded again.
Eventually the user will save a lot of traffic along and there is less power required for the updates, which is good for the battery.
Another new feature in this Play Store is that you can now redeem for gift cards to a credit for buying apps.
