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MacRumors

macrumors bot
Original poster
Apr 12, 2001
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14,151



Apple today seeded the third beta of an upcoming macOS 10.15.3 update to developers for testing purposes, one week after seeding the second beta and more than a month after releasing the macOS Catalina 10.15.2 update.

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.

macos-catalina-wallpaper-800x479.jpg

We don't yet know what improvements the third update to macOS Catalina will bring, but it will likely focus on performance improvements, security updates, and fixes for bugs that weren't able to be fixed in the macOS Catalina 10.15.2 update.

macOS Catalina? 10.15.3 has code in it that suggests a new "Pro Mode" is coming to Apple's Macs. Pro Mode appears to be an optional setting that overrides fan speed limits and energy saving restrictions to improve performance. The code says that apps "may run faster" but battery life could decrease and fan noise could increase.

It's not entirely clear if Pro Mode is coming to Macs in the 10.15.3 release, but the code is there so it is a possibility.

We didn't find any other major new changes in the first two betas of macOS Catalina 10.15.3, but we'll update this post if there's anything new in the third beta.

Article Link: Apple Seeds Third Beta of Upcoming macOS Catalina 10.15.3 Update to Developers
 
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macdos

Suspended
Oct 15, 2017
499
774
It would be insanely great if Apple devotes some effort to maximize performance and minimize memory consumption. We should not have to rely on Macfanscontrol and Lingon to control fan speed and disable unncessary daemons, it should be builtin, as in Windows.
 
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karzansweet

macrumors newbie
Jan 24, 2020
5
3
Erbil
every times shutting down Mac start upshutting down start up {Stocks{ I'm on Mac OS 10.15.3 beta 2 I do know how to stop Stocks opening by self every times I do every think to stop
 

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HailstormX

macrumors regular
Nov 21, 2012
137
221
Hopefully it fixes Mail.... Its been horrible on the new 16" MBP. Fans and CPU running like crazy. Brings the system to a crawl... Hate it.

May they actually give release notes with this beta...
 
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MauiPa

macrumors 68000
Apr 18, 2018
1,758
2,513
It would be insanely great if Apple devotes some effort to maximize performance and minimize memory consumption. We should not have to rely on Macfanscontrol and Lingon to control fan speed and disable unncessary daemons, it should be builtin, as in Windows.
Hahaha. You mean that bloated piece of crap ware- windows? macOS is already way better
[automerge]1579893092[/automerge]
every times shutting down Mac start upshutting down start up {Stocks{ I'm on Mac OS 10.15.3 beta 2 I do know how to stop Stocks opening by self every times I do every think to stop
Huh?
[automerge]1579893177[/automerge]
Hopefully it fixes Mail.... Its been horrible on the new 16" MBP. Fans and CPU running like crazy. Brings the system to a crawl... Hate it.

May they actually give release notes with this beta...
You sure it’s not downloading and indexing your system like it has to do on a new machine?
 
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nyskifan

macrumors newbie
Jun 17, 2008
15
7
Really hope that the Mac mini 2018 eGPU boot screen issues introduced with 10.15.2 are resolved (works great with 10.15.1 and 5700xt card). Also, the navi drivers could stand some performance improvements. If anyone tests with the new beta, please let us know!
 
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luvbug

macrumors 6502a
Aug 11, 2017
554
1,475
Getting closer every day!
I've been waiting to upgrade to Catalina until this third update arrives, given the bugginess that Catalina exhibited upon release. I don't know, historically, how long after release the average .3 update has come out, but it sure seems as though this one has been much later than in the past. I suppose, given the many issues reported, that the long wait shouldn't be surprising. Better late than never, as they say!
 
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