Alongside today’s release of iOS 7 Beta 4 to developers, Apple has also released a new beta of iTunes 11, adding support for the new iTunes Radio feature in iOS 7. Notably, iTunes Radio support requires at lease OS X 10.7 or later.
The update is available now through Apple’s iOS Developer Center for all paid iOS developers.
From the release notes:
What’s new in iTunes
This beta version of iTunes includes the new iTunes Radio.