Apple has today released iTunes 12.3.3. This update brings support for Apple’s new devices that they announced today, including the iPhone SE and 9.7-inch iPad Pro. That’s all we see with this version.
Apple has said recently that they are working on a new version of iTunes with a better Apple Music interface. However, this update isn’t it.
To get this version, go to the Mac App Store > Updates > Software updates > iTunes 12.3.3. If you’re on Windows you can use Apple’s update tool to get the latest version.