Apple today seeded the fourth beta of macOS 10.15 Catalina for testing purposes, two weeks after seeding the third macOS Catalina beta and over a month after the new Mac operating system update was first unveiled at the Worldwide Developers Conference.
The new macOS Catalina beta can be downloaded using the Software Update mechanism in System Preferences. As with all new betas, macOS Catalina should not be installed on a primary machine because it is early release software and has bugs.
macOS Catalina eliminates the iTunes app, splitting it into Music, Podcasts, and TV apps. The Apple Music and Apple Podcasts apps are available now, while the Apple TV app is coming later this year.
Read more at MacRumors.com