This morning, word got out that Google Play Games would support multiplayer for both Android and iOS. So now Google has decided to move forward by making it official. As we noted in the previous post, this massive update for Play Games adds multiplayer iOS support, multiplayer invites, deeper statistics, and gift giving. Much of the update includes behind the scenes pieces for developers. At the Game Developers Conference in San Francisco tomorrow, Google is scheduled to give an in-depth introduction of the new features.
Source: Android Developers Blog