Today's iOS 8.4.1 update is Build 12H321 and can be downloaded over-the-air through the using the Software Update tool in the Settings app on iOS devices.
iOS 8.4.1 is a mi**r update that includes under-the-hood performance improvements, bug fixes, and security updates. Throughout the testing period, ** outward-facing changes were discovered in the beta, and Apple's release **tes specifically mention only Apple Music Improvements and fixes.
- Resolves issues that could prevent turning on iCloud Music Library
- Resolves an issue that hides added Music because Apple Music was set to show offline Music only
- Provides a way to add songs to a new playlist if there aren't any playlists to choose from
- Resolves an issue that may show different artwork for an album on other devices
- Resolves several issues for artists while posting to Connect
- Fixes an issue where tapping Love doesn't work as expected while listening to Beats 1
It's likely iOS 8.4.1 will be one of the last updates to the iOS 8 operating system. iOS 9, iOS 8's successor, has been in testing since June and is on track to be released in the fall alongside new iPhones. iOS 9 builds on the features introduced in iOS 8 and adds both new content and underlying performance improvements.