On Tuesday, Apple released an update for iTunes, version 11.1.2, bringing support for Apple's latest Mac operating system, OS X Mavericks. OS X Mavericks was released earlier today as a free upgrade for Mac users.
In addition to the OS X Mavericks support, Apple also included support for Arabic and Hebrew, as well as a number of bug fixes and performance improvements that should enhance the stability of iTunes overall.
To get this update after updating your machine to OS X Mavericks, you can head over to the Mac App Store’s Updates tab to find the update, or you can go to the Menu and click on “Software Update” to find the latest version of iTunes and download and install it.
The installation does not require a restart and is recommended for all users.
Source: This article was originally published in Modmyi forum thread: Apple Releases iTunes 11.1.2 With OS X Mavericks Support