With the arrival of Android 4.4 KitKat, Google has updated Google Play Services.
First, Google says that Play Services 4.0 will not support Android 2.2 Froyo. According to Google, 97% of all Android devices run Android 2.3 Gingerbread and up, and dropping support for Froyo is necessary in order to move Play Services forward. Play Services 4.0 adds a new ad SDK for developers.
The Maps and Geofencing APIs have been updated to make them more power efficient and more responsive. Developers now have more control over Maps functions that are added to their own apps, and can improve the performance of their geofencing apps and services. Google Play Services 4.0 streamlines the dialog box in apps that use Google+ Sign-In, and adds more tools to Google Wallet.
Last, Google has added new advertising tools that allow users to opt out of advertising, as well as to anonymize their identity as it pertains to advertising services.
