It seems that Google it’s preparing the launch of Android 6.0 Marshmallow, probably on October 5. Google Play services has been updated to 8.1 in preparation for the new version of Android withimprovements that are available to everyone.
Now it will support the new Marshmallow permission system, which allows you to revoke permissions for apps. Also included are app invites, which can allow users of your app invite others to check our the app via email or SMS.
For Android Wear users, Ambient Mode Maps is now possible. Your map will show up and move in Ambient Mode to save some battery by keeping things dark and simple. Google Nearby is also included, so apps will be able to take advantage of those around you in a new social way.