Get Game Center alerts from “My Contacts Only”

Open Settings > Notifications > Game Center, and at the bottom you can choose to see alerts from Everyone or My Contacts Only.

If you like to add a lot of people on Game Center, this is a great way to stay on top of your games with close friends and family who you have added to Contacts.

I believe this choice is new in iOS 6 but I have no way to verify right now. Could someone check?