OpenFeint, a social gaming network that is integrated into many App Store applications, will soon face a new level of competition. Alongside the release of iPhone OS 4.0, Apple is releasing Game Center which is a social gaming network of their own. Game Center will feature friends lists, leaderboards, achievements, and matchmaking amongst other features. OpenFeint is currently used by over 12 million people and Jason Citron, founder of OpenFeint, says he is not worried just yet. We’ll just have to wait and see how it plays out.