A rumor from Pocket Gamer is circulating that Google is making their own social gaming network for Android users that will give users a similar, but superior experience than can be had from Apple's Game Center. The social gaming network is rumored to have many more features than Apple's Game Center, and may release sometime late this year or early 2012.
Droid Gamers noticed that a "GameClient" option was recently added to the Android App Inventor Beta, but that it is "not yet ready for prime time."
Some of the features being rumored to come with the possibly upcoming Google service include peer messaging, in-game message boards, and point total reflecting the number of achievements a user has earned.
Those features are in addition to the features which are already expected to be included to make it a competitor against Game Center, which are expected to be friends, achievements/trophies, and leaderboards.
No more is known at this time about the service, but some are anticipating that Google might make an announcement regarding it at Google I/O.
Image from AndroidGuys