Just after initially unveiling Google Play Services, Google has made the APK installable directly from the Play Store.
Google Play services lets Android apps from the Google Play Store integrate with Google+ and Google Accounts. To work correctly, some apps may require Google Play services to be present and up to date.
Google Play services is usually updated automatically on Android devices. You can also install or update it manually from the Google Play Store.
The app's rollout is expected to complete within a week, but if you're for whatever reason itching to get the Google Play Services app on your device right away, or ever need to download/update it manually in the future, hit the widget below.