Registered developers can download the new beta versi of iOS 11.4 from the Apple Developer Center or live ce the correct cfigurati profile has been installed from the Developer Center.
The iOS 11.4 update introduces a new ClassKit framework for educatial institutis, which supports new features announced at Apple's March 27 educatial event.
For regular users, the iOS 11.4 update adds features originally present in the beta versi of iOS 11.3 but removed before the release.
It includes support for messages iCloud, designed to store your iMessages in iCloud rather than each individual device, which improves synchrizati capabilities. Currently, incoming iMessages are sent to all devices which you are cnected to your Apple ID, but there is no true multi-device synchrizati.
Messages iCloud will allow you to download all your iMessages to new devices, and a deleted message e device will delete it all devices. Older messages and attachments are also stored in iCloud rather than the device, which saves valuable storage space.
The iOS 11.4 update also includes the AirPlay 2 features, with Apple TV available again in the Home app. With AirPlay 2, the same audio ctent can be played in multiple rooms devices that support AirPlay 2 ….