Google is currently in the process of rolling out the latest version of Play Services, namely 10.2, to all Android devices. As usual, there's nothing you need to do - Play Services updates automatically in the background. Once you get this version, you may also receive a neat new function called Instant Tethering. Here's what it does. Say you have an Android phone and tablet, both connected to the same Google account. You're browsing the internet on the tablet at home, connected to your wireless router's Wi-Fi network. But then, all of a sudden, this becomes unavailable or gets...
Source: http://www.gsmarena.com/new_instant_tethering_feature_is_rolling_out_as_part_of_google_play_services_102_for_android-news-22889.php