The first public update for iOS 9 this year has finally arrived in the form of iOS 9.2.1, which was made available to all iPhone, iPad and iPod touch users this morning. iOS 9.2.1 contains a number of security updates and bug fixes. The only specific thing mentioned in Apple’s release note for the iOS update is “a fix for an issue that could prevent the completion of app installation when using an MDM server.” Today’s iOS update comes a week after Apple seeded the first beta build of iOS 9.3 to developers. The 9.3 update promises to be just as big a release as iOS 9.2, bringing a number of new features to iOS like Night Shift, locked Notes, new education features, improved Health, News and Apple Music apps, plus much more. iOS 9.2.1 weighs in at 40MB and can be downloaded right now via an over-the-air update or by connecting your device to iTunes.