Today Apple released iOS 9.2.1 and OS X 10.11.3, for improved stability, compatibility, and security for Mac, iPad, and iPhone. I recommend that all users who are using the current software systems install these updates as soon as possible, and those of you waiting for Apple to mature the new generation may want to consider updating now.
- iOS: visit Settings > About > Software Update
- OS X: Click the Apple menu > App Store. Switch to the Updates tab.