iTunes 12.5.1 has now been released to the public. This is a minor update to iTunes which brings which brings a few design tweaks to Apple Music, to match iOS 10 and tvOS 10, as well as support for iOS 10. It also includes a few things like Siri support for macOS Sierra. However, macOS Sierra isn’t out yet.
To get the latest version, users can go to the Mac App Store > Updates > Software updates > iTunes 12.5.1. If you’re on Windows, you can download the update using Apple’s update utility. If you don’t have iTunes on your computer, you can download it for free from Apple’s website.