Apple Seeds Third Beta of Upcoming macOS Catalina 10.15.1 Update to Developers - MacRumorsOpen MenuShow RoundupsShow Forums menuVisit ForumsOpen Sidebar
Skip to Content

Apple Seeds Third Beta of Upcoming macOS Catalina 10.15.1 Update to Developers

Apple today seeded the third beta of an upcoming macOS Catalina 10.15.1 update to developers, a week after seeding the second beta and a little over two weeks after releasing macOS Catalina to the public.

The new macOS Catalina beta can be downloaded using the Software Update mechanism in System Preferences after installing the proper software from the Developer Center.

test macOS 10
The first update to macOS Catalina is minor in scale and appears to focus on performance improvements and fixes for bugs that weren't able to be addressed in the first version of Catalina. An interim supplemental update was released just two days ago with some other bug fixes that needed to be addressed before 10.15.1 was ready.

Apple's release notes for the first beta said that the update introduces support for the AMD Navi RDNA eGPU architecture and brings some changes to Photos.

You can now filter by Favorites, Edited, ‌‌Photos‌‌, Videos, or Keywords in the All ‌‌Photos‌‌ view, and you can choose View > Metadata > Titles to enable titles and filenames in the All ‌‌Photos‌‌ View.

macOS Catalina is a major update that eliminates iTunes in favor of new Music, Podcasts, and TV apps, nixes support for 32-bit apps, adds a new Find My app, brings a new ‌Photos‌ interface, and includes multiple privacy enhancements and other app refinements.

For full details on what's new in macOS Catalina, make sure to check out our macOS Catalina roundup.

Related Forum: macOS Catalina

Popular Stories

macOS 27 on MacBook Pro

Apple Says macOS 27 Won't Be Compatible With These Macs

Wednesday June 3, 2026 8:29 am PDT by
During WWDC 2025, Apple revealed that macOS 26 Tahoe would be the final major macOS version for Intel-based Macs. macOS 27 will be compatible with Apple silicon Macs only, meaning that you will need a Mac with an M-series chip or a MacBook Neo with an A18 Pro chip in order to install the software update. Apple will unveil macOS 27 during its WWDC 2026 keynote this Monday, June 8, and the...
MacBook Neo on Yellow Feature

MacBook Neo is So Popular That Apple Reportedly Doubled Production

Wednesday June 3, 2026 9:24 am PDT by
On an earnings call in late April, Apple's CEO Tim Cook said that customer response to the MacBook Neo was "off the charts," and the popularity of the laptop has reportedly led the company to significantly boost production. Apple supply chain analyst Ming-Chi Kuo this week said he believes that MacBook Neo shipments to Apple were doubled from an initial target of 5 million units to 10...
iphone 18 pro blue%402x

iPhone 18 Pro: Dark Cherry, Light Blue, and Dark Gray Chassis Leaked [Update]

Thursday June 4, 2026 5:18 am PDT by
Update: Since publication, new information has come to light suggesting the images have been AI-manipulated and are not in fact iPhone 18 Pro chassis parts. The original article follows. The color options Apple is reportedly planning for the upcoming iPhone 18 Pro and ‌iPhone 18 Pro‌ Max have appeared online today in the form of images of chassis parts of unknown authenticity....

Top Rated Comments

LiE_ Avatar
86 months ago
My body is ready for Navi eGPU.
Score: 4 Votes (Like | Disagree)
DHagan4755 Avatar
86 months ago
The big question: Does the new 16-inch MacBook Pro or the Mac Pro require 10.15.1? If so, we're waiting for the general availability of this update.
Score: 4 Votes (Like | Disagree)
hagjohn Avatar
86 months ago

I believe Apple should release iOS and Os releases different times of the year, maybe first half OS 2nd half iOS just so more time can be spent on beta testing and more “appointed“ people can focus on bugs etc just my .2 cents
The problem is that iOS/iPadOS and MacOS are now coming together (in ways), so you really can't release them separately. Reminders is a good example. upgrading iOS 13 broke reminders in MacOS. I have the feeling that we will see more of this with the new TV, Podcast & Music apps.
Score: 3 Votes (Like | Disagree)
Rafterman Avatar
86 months ago
The replacement apps for iTunes are terrible and need to be addressed ASAP. They feel like early alpha versions.
Score: 3 Votes (Like | Disagree)
Skylar. Avatar
86 months ago
New install screen? Definitely something better to look at than an Apple logo with a bar under it.

Attachment Image
Score: 3 Votes (Like | Disagree)
86 months ago

The big question: Does the new 16-inch MacBook Pro or the Mac Pro require 10.15.1? If so, we're waiting for the general availability of this update.
Apple has shipped hardware-specific macOS builds on new Macs that then gets updated to future OS updates, so there's no need to wait for any updates on their side.
Score: 3 Votes (Like | Disagree)