Today is operating system update day for Apple users. The company has released updates for both iOS 8 and OS X Yosemite. There's also an update for iTunes.
iOS 8.4.1 update
iOS 8.4.1 is now available for iPhone, iPad, and iPod touch. This update is chock full of "improvements and fixes to Apple Music." According to Apple's technical notes, the update resolves issues with turning on iCloud Music Library, fixes a problem that hides added music when Apple Music is set to show offline music only, fixes an album artwork issue, and several other fixes.
To install the iOS 8.4.1 update, you must have a Wi-Fi connection. Tap the Settings app on your iOS device and go to General > Software Update. Then tap Download and Install. You can also install the update by connecting your iOS device to your Mac and then install the update via iTunes.
OS X Yosemite 10.10.5 update
OS X Yosemite 10.10.5 is recommended by Apple for all users of Yosemite. According to the company's support document, the update fixes a problem with Apple Mail and "certain email servers," resolves an issue with the Photos app and GoPro cameras and fixes a problem QuickTime Player had with Windows Media files.
To install the 10.10.5 update, launch the App Store app and click on the Updates tab. The app will check in with the App Store, and the update will eventually appear. Click the Update button to continue with the installation. You Mac will needs to restart to finish the installation.
Since iOS 8.4.1 has a bunch of Apple Music updates, it makes sense that Apple update iTunes on the Mac. Among the fixes in iTunes 12.2.2 are ones for My Music sorting and playlists, and there's now the ability to view a list of artists that you follow on Apple Music. Apple Music Connect now lets artists handle their accounts directly in iTunes.
To update iTunes to version 12.2.2, you can go to iTunes > Check for Updates from within the iTunes app. You can also run the updater through the App Store.