As noted by 9to5Mac, Apple today seeded build 12E55 of OS X 10.8.4 to developers. The release comes nine days after the previous build 12E52 and marks the eighth beta iteration of OS X 10.8.4.

12e55
As with previous beta releases, Apple continues to ask developers to focus on Wi-Fi, Graphics Drivers, and Safari.

The update is available through the software update tool in the Mac App Store and Apple's Developer Page.

Top Rated Comments

Parasprite Avatar
164 months ago
Screw it. Waiting for 10.9

I made it to 10.8.3, I can wait for anything.
Score: 17 Votes (Like | Disagree)
ArtOfWarfare Avatar
164 months ago
My Macbook Pro has been flashing MAJOR graphics artifacts since upgrading to 10.8.3 (this did not happen in 10.8.2). When the glitches become severe enough, the system freezes up completely, with a hard restart being the only recovery.

I'm hoping that 10.8.4 will fix this issue!

Here are some videos of my problem:

http://youtu.be/YGae1ams0i8
http://youtu.be/tqO30pxdSOs
http://youtu.be/OIwSkIJduRc

Here is an image of my problem:

Image (https://discussions.apple.com/servlet/JiveServlet/downloadImage/2-21996729-250883/450-336/IMG_3595+copy.JPG)

You're holding it wrong.
Score: 13 Votes (Like | Disagree)
TheGreenBastard Avatar
164 months ago
Screw it. Waiting for 10.9
Score: 13 Votes (Like | Disagree)
w0lf Avatar
164 months ago
Re: This shutdown bug.

Can I ask why, in this day and age, why on earth people are doing it so often?!?

My macs never get restarted apart from Software updates or rebooting into Windows. MBP hasn't been restarted in 30 days and MP two weeks!!

If it is done on purpose (which it is) then it isn't a bug...

Because we masturbate to watching our macbooks restart.

Why the hell do people keep asking this? It's a bug and it should be fixed that's all.
Score: 6 Votes (Like | Disagree)
cmChimera Avatar
164 months ago

Then who do you blame?

I don't blame anyone. I like Mountain Lion. I think Lion could've used more polish before release, but I think Mountain Lion was a return to form. I have very few complaints about 10.8.
Score: 6 Votes (Like | Disagree)
designgeek Avatar
164 months ago
They really seem to be taking their time with this one. I hope the get most of the crap ironed out. OS X gets buggier and buggier with each new release.
Score: 6 Votes (Like | Disagree)

Popular Stories

Apple Wallet ID Illinois

Apple Plans to Expand iPhone Driver's Licenses to These 7 U.S. States

Wednesday December 24, 2025 8:40 am PST by
In select U.S. states, residents can add their driver's license or state ID to the Apple Wallet app on the iPhone and Apple Watch, and then use it to display proof of identity or age at select airports and businesses, and in select apps. The feature is currently available in 13 U.S. states and Puerto Rico, and it is expected to launch in at least seven more in the future. To set up the...
iPhone Top Left Hole Punch Face ID Feature Purple

iPhone 18 Pro Launching Next Year With These 12 New Features

Tuesday December 23, 2025 8:36 am PST by
While the iPhone 18 Pro and iPhone 18 Pro Max are not expected to launch for another nine months, there are already plenty of rumors about the devices. Below, we have recapped 12 features rumored for the iPhone 18 Pro models. The same overall design is expected, with 6.3-inch and 6.9-inch display sizes, and a "plateau" housing three rear cameras Under-screen Face ID Front camera in...
maxresdefault

Where's the New Apple TV?

Monday December 22, 2025 11:30 am PST by
Apple hasn't updated the Apple TV 4K since 2022, and 2025 was supposed to be the year that we got a refresh. There were rumors suggesting Apple would release the new Apple TV before the end of 2025, but it looks like that's not going to happen now. Subscribe to the MacRumors YouTube channel for more videos. Bloomberg's Mark Gurman said several times across 2024 and 2025 that Apple would...
iOS 26

iOS 26.2 Adds These 8 New Features to Your iPhone

Monday December 22, 2025 8:47 am PST by
Earlier this month, Apple released iOS 26.2, following more than a month of beta testing. It is a big update, with many new features and changes for iPhones. iOS 26.2 adds a Liquid Glass slider for the Lock Screen's clock, offline lyrics in Apple Music, and more. Below, we have highlighted a total of eight new features. Liquid Glass Slider on Lock Screen A new slider in the Lock...
maxresdefault

10 Mac Apps Worth Trying in 2026

Wednesday December 24, 2025 9:27 am PST by
2026 is almost upon us, and a new year is a good time to try out some new apps. We've rounded up 10 excellent Mac apps that are worth checking out. Subscribe to the MacRumors YouTube channel for more videos. Alt-Tab (Free) - Alt-Tab brings a Windows-style alt + tab thumbnail preview option to the Mac. You can see a full window preview of open apps and app windows. One Thing (Free) -...
Foldable iPhone 2023 Feature Iridescent Search

Samsung Developing 'Wide Fold' With iPhone Fold-Like Design Ahead of Apple's 2026 Launch

Tuesday December 23, 2025 11:55 am PST by
Samsung is working on a new foldable smartphone that's wider and shorter than the models that it's released before, according to Korean news site ETNews. The "Wide Fold" will compete with Apple's iPhone Fold that's set to launch in September 2026. Samsung's existing Galaxy Z Fold7 display is 6.5 inches when closed, and 8 inches when open, with a 21:9 aspect ratio when folded and a 20:18...
iOS 26

iOS 26.3 Brings AirPods-Like Pairing to Third-Party Devices in EU Under DMA

Monday December 22, 2025 3:20 pm PST by
The European Commission today praised the interoperability changes that Apple is introducing in iOS 26.3, once again crediting the Digital Markets Act (DMA) with bringing "new opportunities" to European users and developers. The Digital Markets Act requires Apple to provide third-party accessories with the same capabilities and access to device features that Apple's own products get. In iOS...
iPhone Fold Vertical Feature

Why Apple's Foldable iPhone May Be Smaller Than Expected

Tuesday December 23, 2025 5:21 am PST by
Apple's first foldable iPhone, rumored for release next year, may turn out to be smaller than most people imagine, if a recent report is anything to go by. According to The Information, the outer display on the book-style device will measure just 5.3 inches – that's smaller than the 5.4-inch screen on the ‌iPhone‌ mini, a line Apple discontinued in 2022 due to poor sales. The report has led ...
iphone fold 3d print

Have a 3D Printer? You Can Make Your Own iPhone Fold Dummy

Tuesday December 23, 2025 1:31 pm PST by
Apple is working on a foldable iPhone that's set to come out in September 2026, and rumors suggest that it will have a display that's around 5.4 inches when closed and 7.6 inches when open. Exact measurements vary based on rumors, but one 3D designer has created a mockup based on what we've heard so far. On MakerWorld, a user named Subsy has uploaded a 1:1 iPhone Fold replica (via Macworld), ...