Apple today seeded the second beta of their iOS 11.4 update to developers. The beta of Apple’s upcoming mobile device operating system comes two weeks following the release of the first beta.
Registered developers can download iOS 11.4 beta 2 from the Apple Developer Center, or over-the-air directly to iOS devices that has the proper configuration profile installed.
iOS 11.4 beta 2 Release Notes
New in iOS 11.4
Messages in iCloud
iOS 11.4 beta includes Messages in iCloud for testing and evaluation purposes. Messages will prompt users to turn on Messages in iCloud on first launch after upgrading to iOS 11.4 beta. Please note that Messages in iCloud is automatically enabled for users who have two-factor authentication and iCloud Backup enabled.
Notes and Known Issues
AirPlay
Resolved Issues
- When streaming a video from the YouTube app via Airplay, audio might lag behind the video by 2-3 seconds. (36833829)
- When streaming a video from the YouTube app to a single Apple TV, only the audio might play out of the Apple TV. (36833829)
Foundation
Known Issues
- Clients of NSURLSessionStreamTask that use a non-secure connection fail to connect when an error occurs during PAC file evaluation and the system is configured for either Web Proxy Auto Discovery (WPAD) or Proxy Automatic Configuration (PAC). A PAC evaluation failure can occur when the PAC file contains invalid JavaScript or the HTTP host serving the PAC file is unreachable. (33609198)Workaround: Use startSecureConnection to establish a secure connection.
Keychain
Resolved Issues
- The shared web credentials API always returns the error “Autofill disabled”. (36989569)
Music
Resolved Issues
- In certain circumstances playback might get stuck at the end of the first track. (38806871)
Vision
Known Issues
- Facial landmarks identified by the Vision framework may flicker in temporal use cases such as video. (32406440)
Support for AirPlay 2 features once again show the Apple TV as available in the Home app. AirPlay 2 allows the same audio content to be played on multiple devices in multiple rooms.
A new (PRODUCT)RED wallpaper for the iPhone 8 and iPhone 8 Plus is also included.