Today Apple has started rolling out the latest version of its mobile operating system. iOS 8.4.1 is already on its way to all supported iPhones and iPads. It follows the bigger release that was iOS 8.4, which came out at the end of June with built-in support for Apple Music, the new streaming service from the Cupertino company. Since it's an x.x.1 version, understandably iOS 8.4.1 has one sole focus, and that is fixing bugs. The official changelog makes this extremely clear. Interestingly though, all of its improvements have to do with Apple Music. There's a fix for an issue that could prevent iCloud Music Library from working, another for one that used to hide added music if the service was set to show offline tracks only, and there's now a way to add songs to a new playlist if there aren't any existing playlists to choose from (which sounds like something that should have been possible already). A bug used to show different artwork for an album on different devices, and this has been squashed too, as have been several issues for artists trying to use Connect. Finally, tapping Love will now work as expected when you're listening to the Beats 1 radio...
Source: http://www.gsmarena.com/apple_releases_ios_841_for_all_supported_devices-news-13538.php