Google has updated Google Play Services to include support for Google Drive. Turn-based multiplayer games and support for additional ad networks have also been added to Google Play Services.
Google Play Services is a software development kit (SDK) and application programming interface (API) set for Android devices that Google launched in 2012. Google Play Services is now at version 4.1.
Another major change that has been added to Google Play Services is a developer preview API to access a user’s Google Drive to read and write files. The API works in offline mode so that changes made to a user’s Google Drive gets synchronized after a user reconnects.
Turn-based multiplayer game support: The turn-based multiplayer games have support for 2-8 players.
Mobile Ads SDK: Location-based Google Mobile Ads SDK was added to Google Play Services 4.0 and now it has full support for DoubleClick for Publishers, DoubleClick Ad Exchange, and Search Ads for Mobile Apps.
The APK file was signed by Google and it upgrades the existing app. The Google signature guarantees that the file is safe to install. It may take several days for the software to be pushed to your devices, but it is available on external websites like AndroidFileHost.