iOS 9.3 is coming in the Spring and will introduce Night Shift as well as a number of other new features.
Game Center Drops Support for iPhone 3G and 2nd Gen iPod Touch in iOS 4.1 Beta 3
Amongst the changes to the developer release of iOS 4.1 last night, Apple has removed support for Game Center on the iPhone 3G and 2nd generation iPod Touch.
Game Center is Apple's social gaming network that offers iOS game developers to link into a centralized service that offers high score leaderboards, achievements and multi-player matchmaking. The announcement of the system was welcome by developers and gamers as a way to combat the increasingly fragmented existing gaming networks found on the platform.
Apple's removal of iPhone 3G and 2nd Generation iPod Touch devices comes without further explanation. Such a move would restrict the service for the iPhone 3GS, 3rd Generation iPod Touch, iPhone 4 and presumably iPad.