Figuring out which games are available for Game Center can be tough. Fortunately, Game Center compatbility-badges will be coming to the App Store in iOS 4.2, so you'll know exactly which games offer Game Center achievements while you're shopping around.
Developers are a lucky lot. They get to play with Apple's latest iOS before the rest of us. Of course it's beta software and they're expected to write apps based on it, but it's still a pretty cool gig.
Well developers, today Apple announced the immediate availability of iOS 4.2 beta.