App updates are quicker to download and use less data
Google announced Smart App Updates at this year’s I/O conference and now seems to have enabled the new Play Store feature. This means that less data is consumed when app updates are downloaded, which needless to say is good for everyone involved.
Artem from Android Police has explained how Smart App Updates work and also posted a couple of videos of the updates in action:
Normally, when an update to an application comes out, the Play Store downloads it in full, which with large apps and slow connections can get quite painful (think 50MB+ sizes). Smart app updates, announced at an I/O session in June, was the solution. When enabled, only the incremental difference (a.k.a. the delta) between the old and new apks would be sent over the wire, thereby saving huge amounts of data for both Google and Play Store users.