All users running Android 2.2 or higher should now have access to the latest version of Google Play services for their device
The latest Google Play Services (version 3.2; exact build varies by device) has completed its rollout and should be available for all Android users running Froyo or higher. This is good news for end-users, as we've talked before about how this wrests control of Android features away from manufacturers and carriers, and gives it back to Google. With more resources to devote to Android, we're glad to see Google have a bit more say in the features everyone gets to have and enjoy.
Speaking of features, Google Play Services 3.2 brings a few new ones. We've seen and talked about the improvements to location services, which allows things like Android Device Manager to work without destroying your battery. Like wise for the new Photo Sphere viewer and its compass viewing mode. Both are subtle, but nice little additions.
The really cool stuff in the latest Google Play Services is for developers. The Fused Location Provider (a "smart" way to get location that uses the most power-efficient method) supports a low-power mode option for those times you need to get a users location, as well as supporting mock locations for easier and better testing. The geofencing APIs have been updated, so devices with supporting hardware (the Nexus 4 was used as an example) can use hardware-based geofencing to consume "significantly less" battery, and a snapshot feature has come for the maps API that lets developers grab an image of the current map for those times when an interactive map isn't needed. Also, new options and support for Google+ sign-in, analytics, and InstantBuy are included.
Most of us will just enjoy less power-hungry location services and the compass mode in the Photo Sphere viewer, but developers and those who are curious should visit the source links for all the details.
Source: Android Developers Blog