Apple Seeds Second Beta of Upcoming macOS Catalina 10.15.6 Update to Developers - MacRumors
Skip to Content

Apple Seeds Second Beta of Upcoming macOS Catalina 10.15.6 Update to Developers

Apple today seeded the second beta of an upcoming macOS Catalina 10.15.6 update to developers for testing purposes, one week after seeding the first beta and two weeks after releasing macOS Catalina 10.15.5 with battery health management features for Macs.

macos catalina wallpaper
The macOS Catalina 10.15.6 beta can be downloaded from the Software Update mechanism in System Preferences after the proper profile has been installed from the Apple Developer Center.

There's no word yet on what improvements the new update to macOS Catalina brings, but it likely includes performance improvements, security updates, and fixes for bugs that weren't able to be addressed in the previous update. No new features were found in the first beta, but we'll update this article should anything new be found in the second beta.

Related Forum: macOS Catalina

Popular Stories

apple pro tell logo

Apple Launching Five New Products This Friday

Monday November 2, 2026 1:22 am PST by
Apple is releasing five new products this Friday, November 6, following pre-orders that opened last week, including its first touchscreen MacBook Pro models. The following new products will be available from Friday: iPad mini with OLED display and A20 Pro chip iMac with M6 chip 14-inch MacBook Pro with M6 chip 14-inch MacBook Pro with OLED touchscreen 16-inch MacBook Pro with OLED...
iPhone Duo Display Cracking

Apple Alerts Stores to iPhone Duo's Display Cracking Issue

Friday October 30, 2026 3:20 pm PDT by
In a memo shared with Apple Stores and Apple Authorized Service Providers this week, and later obtained by MacRumors, Apple provided technicians with guidance on how to diagnose and address the iPhone Duo's inner display cracking issue. If a customer reports the issue, Apple advised technicians to inspect the iPhone Duo and repair or replace it in accordance with their standard procedures....
Apple Logo Gradient 16x9 1

Apple Isn't Done With 2026: Here's What's Still Coming

Monday November 2, 2026 7:27 am PST by
Apple's busiest season isn't over yet. Far from it. With two hardware launch dates still to come in November, plus software updates and new smart home accessories running into December, there's more on the way from Apple before the end of 2026, so be sure to stick around. Below, we've rounded up what's still coming, along with one date in particular that's worth watching if you're a holiday...

Top Rated Comments

sugargliderdude Avatar
84 months ago

This may be the first Mac OS I completely skip.
thanks for sharing that, have a great day.
Score: 27 Votes (Like | Disagree)
84 months ago
This may be the first Mac OS I completely skip.
Score: 14 Votes (Like | Disagree)
84 months ago

After using Windows 10 for a while, Catalina looks so boring o_O. If you really love macOS, stay away from Windows, no matter what.
I beg to differ. I have to use both and I find Windows 10 to be...annoying. The UI is extremely inconsistent, going back and forth between the "new" look that isn't so new, and items that look like they're from 20 years ago in Windows 2000. Some tasks are buried maddeningly deep in menus or controls. Thanks but no thanks.
Score: 10 Votes (Like | Disagree)
Kylo83 Avatar
84 months ago
still hasn't fixed the audio popping smh
Score: 10 Votes (Like | Disagree)
84 months ago
I bet the 16" MBP overheating when an external monitor is attached bug still isn't fixed lol
Score: 8 Votes (Like | Disagree)
84 months ago
If this doesn’t fix the 16” MBP kernel panic when waking from sleep I swear to god...
Score: 8 Votes (Like | Disagree)
Latest Stories
Apple Requiring Developers to Disclose Location Sharing and Dating Features in Apps
Apple Requiring Developers to Disclose Location Sharing and Dating Features in Apps
6 hours ago
Apple's Q4 2026 Earnings Call Takeaways
Apple's Q4 2026 Earnings Call Takeaways
6 hours ago
Apple Dodges Question on More Price Hikes as Memory Costs Climb
Apple Dodges Question on More Price Hikes as Memory Costs Climb
6 hours ago
Apple CEO Ternus Says iPhone Duo Shortages Have No End Date in Sight
Apple CEO Ternus Says iPhone Duo Shortages Have No End Date in Sight
8 hours ago
Apple Reports 4Q 2026 Results: $30.7B Profit on $114.5B Revenue
Apple Reports 4Q 2026 Results: $30.7B Profit on $114.5B Revenue
9 hours ago
Early Black Friday Brings Steep Price Drops on Apple's Latest iPhone Cases
Early Black Friday Brings Steep Price Drops on Apple's Latest iPhone Cases
12 hours ago
John Ternus Hosting His First Earnings Call as Apple CEO Today
John Ternus Hosting His First Earnings Call as Apple CEO Today
13 hours ago
Here's What Spotify Looks Like on Apple's HomeView
Here's What Spotify Looks Like on Apple's HomeView
13 hours ago
iOS 27.2.1 Coming Soon, iOS 27.3 Beta Likely Available Tomorrow
iOS 27.2.1 Coming Soon, iOS 27.3 Beta Likely Available Tomorrow
14 hours ago
Mark Gurman: Apple Initially Aimed to Release iPhone Duo in November
Mark Gurman: Apple Initially Aimed to Release iPhone Duo in November
15 hours ago
Best Early Black Friday Deals on Apple Products Available Now
Best Early Black Friday Deals on Apple Products Available Now
15 hours ago
Apple Isn't Done With 2026: Here's What's Still Coming
Apple Isn't Done With 2026: Here's What's Still Coming
15 hours ago
Apple 'HomeView Ultra' With 9-Inch 360º Screen Detailed in New Report
Apple 'HomeView Ultra' With 9-Inch 360º Screen Detailed in New Report
15 hours ago
Apple TV 4K Pre-Order Discount Returns at Amazon
Apple TV 4K Pre-Order Discount Returns at Amazon
16 hours ago
Zoom and These Microsoft Apps Now Optimized for iPhone Duo
Zoom and These Microsoft Apps Now Optimized for iPhone Duo
16 hours ago
Canva Brings Free All-in-One Affinity App to iPad
Canva Brings Free All-in-One Affinity App to iPad
16 hours ago
iPhone Duo: Latest Buyer Wait Times
iPhone Duo: Latest Buyer Wait Times
18 hours ago
iPhone Duo Owners Can't Change Display Zoom After Setup
iPhone Duo Owners Can't Change Display Zoom After Setup
14 hours ago
Apple HomeView Could Double as a Security Camera
Apple HomeView Could Double as a Security Camera
20 hours ago
Apple Launching Five New Products This Friday
Apple Launching Five New Products This Friday
21 hours ago
Nearly Every M5 MacBook Air Now $200 Off on Amazon
Nearly Every M5 MacBook Air Now $200 Off on Amazon
2 days ago
Apple's HomeView Ships With Six-Month-Old Software
Apple's HomeView Ships With Six-Month-Old Software
2 days ago
Three New iPads Rumored to Launch in First Half of 2027
Three New iPads Rumored to Launch in First Half of 2027
2 days ago
Apple Offers Steps to Fix Daylight Saving Time Bug on Apple Watch
Apple Offers Steps to Fix Daylight Saving Time Bug on Apple Watch
2 days ago
Apple Watch Ultra 4 Hits All-Time Low Price With Amazon's $99 Discount
Apple Watch Ultra 4 Hits All-Time Low Price With Amazon's $99 Discount
3 days ago
Reminder: Apple's Big Discount on Beats 360 Ear Cushions Ends Today
Reminder: Apple's Big Discount on Beats 360 Ear Cushions Ends Today
3 days ago
Here's a New Tour of Apple's HomeView Software
Here's a New Tour of Apple's HomeView Software
3 days ago
Apple Reveals New iPad Mini's Battery Capacity
Apple Reveals New iPad Mini's Battery Capacity
3 days ago
Top Stories: Apple's Big MacBook Pro, iPad mini and iMac Updates
Top Stories: Apple's Big MacBook Pro, iPad mini and iMac Updates
3 days ago
'Pluribus' Season 2 Reportedly Starts Production Today
'Pluribus' Season 2 Reportedly Starts Production Today
3 days ago