Following the release of the updates to iOS and macOS 10.2.1 Sierra 10.12.3 Apple updated the media player iTunes. Version 12.5.5 the developers have implemented security enhancements and improved performance.
Judging by the description, the iTunes update was released simultaneously with cumulative releases for iPhone, Mac, Apple Watch and Apple TV are aimed at improving compatibility. The previous version debuted in December, and added the ability to use a scrubber on the Touch Bar MacBook Pro, allowing you to navigate to the desired part of a song, movie, TV shows and other media content.
In addition to bug fixes, update iTunes 12.5.5 aimed at improving stability and performance, including improved compatibility with iPhone, iPod touch and iPad running iOS 10.2.1.
iTunes supports a new TV app designed for smartphones iPhone, iPad tablets and set top boxes Apple TV. This program provides access to all broadcasts and movies into a single place and allows you to find new content to view. The size of the update is around 120 MB.
12.5.5 iTunes with improved compatibility available to all users of Macs and Windows PCs. Download the app on the official Apple website or through system updates.