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

iPhone 17 Pro Dark Blue and Orange

iPhone 17 Release Date, Pre-Orders, and What to Expect

Thursday August 28, 2025 4:08 am PDT by
An iPhone 17 announcement is a dead cert for September 2025 – Apple has already sent out invites for an "Awe dropping" event on Tuesday, September 9 at the Apple Park campus in Cupertino, California. The timing follows Apple's trend of introducing new iPhone models annually in the fall. At the event, Apple is expected to unveil its new-generation iPhone 17, an all-new ultra-thin iPhone 17...
xiaomi apple ad india

Apple and Samsung Push Back Against Xiaomi's Bold India Ads

Friday August 29, 2025 4:54 am PDT by
Apple and Samsung have reportedly issued cease-and-desist notices to Xiaomi in India for an ad campaign that directly compares the rivals' devices to Xiaomi's products. The two companies have threatened the Chinese vendor with legal action, calling the ads "disparaging." Ads have appeared in local print media and on social media that take pot shots at the competitors' premium offerings. One...
crossbody strap

iPhone 17's 'Crossbody Strap' Accessory to Feature Magnetic Design

Thursday August 28, 2025 7:49 am PDT by
Apple's cases for the iPhone 17 lineup will be accompanied by a new Crossbody Strap accessory with a unique magnetic design, according to the leaker known as "Majin Bu." Apple's Crossbody Strap reportedly features an unusual magnetic design; it likely has a "flexible metal core" that makes it magnetic along its entire length. At the ends, "rings polarized oppositely to the strap close the...
Awe Dropping Apple Event Feature

Five Things to Expect From Apple's 'Awe Dropping' September 9 Event

Tuesday August 26, 2025 4:17 pm PDT by
Apple today announced its "Awe Dropping" iPhone-centric event, which is set to take place on Tuesday, September 9 at 10:00 a.m. Pacific Time. There are a long list of products that are coming, but we thought we'd pull out five feature highlights to look forward to. That Super Thin iPhone - Apple's September 9 event will see the unveiling of the first redesigned iPhone we've had in years, ...

Top Rated Comments

DHagan4755 Avatar
76 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)
LiE_ Avatar
76 months ago
My body is ready for Navi eGPU.
Score: 4 Votes (Like | Disagree)
Rafterman Avatar
76 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)
hagjohn Avatar
76 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)
MikhailT Avatar
76 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)
TheSkywalker77 Avatar
76 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)