Apple has some new software to go along with its new iPhone 6 and Apple Watch announcements from this morning. iTunes version 11.4 is now available for Mavericks as free update.
iTunes 11.4 adds support for iOS 8 ahead of the public release on September 17th. The release notes state that update adds the ability for users to sync favorite music, movies and other content on iOS 8 devices. The update is available now in the Mac App Store, or via direct download on the viTunes website.