Apple today released a new version of the iTunes 12 beta for both developers and OS X Yosemite beta testers



From MacRumors:

First introduced in July, iTunes 12 includes an "elegant new design" that also includes support for several iOS 8/Yosemite features including Family Sharing. iTunes 12 also includes improved playlists, a redesigned Info Window, and a new icon. iTunes 12 and OS X Yosemite remain in a beta testing phase, with a public release for the software expected this fall, possibly in October.

  Apple Launches New iTunes 12 Beta for OS X Yosemite