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macrumors bot
Original poster
Apr 12, 2001

Apple today seeded the sixth beta of macOS 10.15 Catalina for testing purposes, more than two weeks after seeding the fifth 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.

The three new apps offer similar functionality to iTunes, but are split up by feature. iOS device management is still available on the Mac, but it's now done through the Finder rather than iTunes.

With a new Sidecar feature, you can turn your iPad into a second display for your Mac with just the click of a button. The Apple Pencil works with Sidecar, so you can turn your iPad into a drawing tablet in apps like Photoshop and Illustrator.

Your Apple Watch can be used to approve security prompts for passwords and other info in macOS Catalina, and Macs with a T2 chip now support Activation Lock, making them more secure. There's a new Find My that brings the Find My Mac app to the Mac for the first time and even lets you track your devices when they're offline, or, in the case of notebooks, closed.

Screen Time is available on the Mac as well as iOS devices, and Project Catalyst, a new Apple initiative, will let developers easily port their iPad apps over to the Mac to increase the number of Mac apps available.

There's a new Photos interface that surfaces your best photos organized by day, month, or year, there's a new start page in Safari, Mail has new tools for muting email threads and blocking senders, and the Reminders app has been overhauled. 32-bit apps no longer work in macOS Catalina, which is something to be aware of before installing the beta.

For more details on macOS Catalina, make sure to check out our macOS Catalina roundup.

Update: Apple has also made a new public beta of macOS Catalina available to public beta testers.

Article Link: Apple Seeds Sixth Beta of macOS Catalina to Developers [Update: Public Beta Available]


macrumors 65816
Apr 11, 2006
Confirming. Build 19A536g on Dev Console. Release notes also already up for b6.

Interesting tidbits:
  • Music: "Artwork changes now appear immediately; playlists have been added."
  • Photos: still doing the database clone/backup thing, with deletion and correction later on.
  • App Store: "You no longer receive an error when downloading or updating apps."
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macrumors 65816
Jul 12, 2009
Super exciting!

Time to see if the myriad of bugs reported on the forums has been addressed.

Will update this post with eGPU support on Thunderbolt 1 and 2 Macs when I do the test.


macrumors 68040
May 28, 2008
I’m just waiting for adobe to update their apps to work. More specifically, Acrobat Pro. As of now, it just opens and closes. There are some 32-bit components that aren’t updated yet.
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macrumors regular
Oct 18, 2005
Lincoln, Nebraska
I have been on the public betas, and I have yet to get Sidecar to work, between my 2019 MB Pro and my 3rd-gen iPad Pro. It always just throws up two overlapping dialog boxes about a timeout. I'm crossing my fingers for the next public beta.


macrumors 68040
Sep 2, 2013
North Vancouver
Great News - can't wait to try it out

Hope that Column browser in music is restored or an alternative is in the works?

Is there a FireFox fix?

Any idea what "shelves" are? in Music?

beta 6.png
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