iOS 27 is packed with new features for [Apple Wallet](https://9to5mac.com/2026/06/08/heres-everything-new-for-apple-wallet-in-ios-27/), [Messages](https://9to5mac.com/2026/06/10/heres-everything-new-for-messages-in-ios-27/), [Notes](https://9to5mac.com/2026/06/10/heres-everything-new-for-apple-notes-in-ios-27/), and other system apps—including Calendar. Here’s everything new for Apple’s Calendar app in iOS 27.