After releasing OS X Mountain Lion 10.8.4 to the public in early June, Apple has seeded the first beta of OS X 10.8.5, Build 12F9, to developers. According to 9to5Mac, Apple has also seeded the 10.8.5 beta to its Retail Team.

beta1085
Apple also released a developer preview of OS X Mavericks last week, which is expected to be released to the public this fall.

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

Top Rated Comments

weaterneyes Avatar
163 months ago
as I always joke, "name one thing good that's ever come from patience."

isn't there a saying about the the early bird gets the worm?


"And the second mouse gets the cheese"
Score: 6 Votes (Like | Disagree)
portishead Avatar
163 months ago
I just assumed everyone was on 10.9 already.
Score: 5 Votes (Like | Disagree)
Mr. Retrofire Avatar
163 months ago
Hope this fixes the sleep issues I have with my new iMac, loosing network drives after waking from deep sleep. Also USB drives being disconnected unexpectedly after waking up.
http://www.apple.com/feedback/macosx.html

Updated kernel extensions and frameworks in this delta update (newer than in 10.8.4 GM):
AMDRadeonAccelerator.kext
AMDRadeonVADriver.bundle
AMDRadeonX3000GLDriver.bundle
AMDRadeonX4000GLDriver.bundle
AppleACPIPlatform.kext
AppleAHCIPort.kext
AppleAPIC.kext
AppleBacklight.kext
AppleBacklightExpert.kext
AppleCameraInterface.kext
AppleEFIRuntime.kext
AppleGraphicsPowerManagement.kext
AppleHDA.kext
AppleHIDKeyboard.kext
AppleHSSPIHIDDriver.kext
AppleHSSPISupport.kext
AppleIntelCPUPowerManagement.kext
AppleIntelCPUPowerManagementClient.kext
AppleIntelFramebufferAzul.kext
AppleIntelFramebufferCapri.kext
AppleIntelHD3000Graphics.kext
AppleIntelHD3000GraphicsGA.plugin
AppleIntelHD3000GraphicsGLDriver.bundle
AppleIntelHD3000GraphicsVADriver.bundle
AppleIntelHD4000Graphics.kext
AppleIntelHD4000GraphicsGLDriver.bundle
AppleIntelHD4000GraphicsVADriver.bundle
AppleIntelHD5000Graphics.kext
AppleIntelHD5000GraphicsGLDriver.bundle
AppleIntelHD5000GraphicsVADriver.bundle
AppleIntelHDGraphics.kext
AppleIntelHDGraphicsFB.kext
AppleIntelHDGraphicsGA.plugin
AppleIntelHDGraphicsGLDriver.bundle
AppleIntelHDGraphicsVADriver.bundle
AppleIntelHSWVA.bundle
AppleIntelIVBVA.bundle
AppleIntelLpssDmac.kext
AppleIntelLpssGspi.kext
AppleIntelLpssSpiController.kext
AppleIntelSNBGraphicsFB.kext
AppleIntelSNBVA.bundle
AppleLPC.kext
AppleMikeyHIDDriver.kext
AppleMultitouchDriver.kext
ApplePlatformEnabler.kext
AppleSMBusController.kext
AppleSMBusPCI.kext
AppleSMC.kext
AppleSMCLMU.kext
AppleStorageDrivers.kext
AppleThunderboltDPAdapters.kext
AppleThunderboltEDMService.kext
AppleThunderboltNHI.kext
AppleThunderboltPCIAdapters.kext
AppleThunderboltUTDM.kext
AppleTopCase.kext
AppleUpstreamUserClient.kext
AppleUSBAudio.kext
ATI2400Controller.kext
ATI2600Controller.kext
ATI3800Controller.kext
ATI4600Controller.kext
ATI4800Controller.kext
ATI5000Controller.kext
ATI6000Controller.kext
ATI7000Controller.kext
ATIFramebuffer.kext
ATIRadeonX2000.kext
ATIRadeonX2000GA.plugin
ATIRadeonX2000GLDriver.bundle
ATIRadeonX2000VADriver.bundle
ATISupport.kext
AudioAUUC.kext
CoreStorage.kext
GeForce.kext
GeForceGA.plugin
GeForceGLDriver.bundle
GeForceVADriver.bundle
IO80211Family.kext
IOAccelerator2D.plugin
IOAcceleratorFamily.kext
IOAcceleratorFamily2.kext
IOAHCIFamily.kext
IOAudioFamily.kext
IOBluetoothFamily.kext
IOBluetoothHIDDriver.kext
IOFireWireFamily.kext
IOGraphicsFamily.kext
IOHIDFamily.kext
IONDRVSupport.kext
IONetworkingFamily.kext
IOPCIFamily.kext
IOPlatformPluginFamily.kext
IOSCSIArchitectureModelFamily.kext
IOThunderboltFamily.kext
IOUSBAttachedSCSI.kext
IOUSBFamily.kext
IOUSBMassStorageClass.kext
IOVideoFamily.kext
MrRetrofireOS.kext
NVDAGF100Hal.kext
NVDAGK100Hal.kext
NVDANV50Hal.kext
NVDAResman.kext
NVDAStartup.kext
OSvKernDSPLib.kext
PromiseSTEX.kext
System.kext
vecLib.kext
Accelerate.framework
ApplicationServices.framework
AudioToolbox.framework
AudioUnit.framework
AVFoundation.framework
CoreAudio.framework
CoreGraphics.framework
CoreMediaIO.framework
CoreWLAN.framework
IOBluetooth.framework
IOBluetoothUI.framework
IOKit.framework
Kernel.framework
Message.framework
OpenCL.framework
OpenGL.framework
QTKit.framework
Quartz.framework
QuickTime.framework
StoreKit.framework
vecLib.framework
Score: 4 Votes (Like | Disagree)
katewes Avatar
163 months ago
Any update on ML's shutdown speed with 10.8.5? Is it snappier?

e.g. Lion had fast shutdown speed, so why can't Mountain Lion have similar or slightly slower shutdown than Lion - e.g. Lion shuts down in 2-3 seconds whereas Mountain Lion shuts down in 20-30 seconds. No matter what people say about the time needed to shutdown lots of processes, it does not explain why Mountain Lion's shutdown is so much longer than Lion's.
Score: 3 Votes (Like | Disagree)
decimortis Avatar
163 months ago
"Sometime in the fall?" Come on now, we all know it'll be the last day of Fall. ;)

D.
Score: 3 Votes (Like | Disagree)
Mike MA Avatar
163 months ago
Every update is appreciated. 10.9 is still far away.
Score: 2 Votes (Like | Disagree)

Popular Stories

top stories 2025 12 20

Top Stories: iOS 26.3 Beta, Major Apple Leaks, and More

Saturday December 20, 2025 6:00 am PST by
You'd think things would be slowing down heading into the holidays, but this week saw a whirlwind of Apple leaks and rumors while Apple started its next cycle of betas following last week's release of iOS 26.2 and related updates. This week also saw the release of a new Apple Music integration with ChatGPT, so read on below for all the details on this week's biggest stories! Top Stories i...
iPhone Top Left Hole Punch Face ID Feature Purple

iPhone 18 Pro Features Leaked in New Report, Including Under-Screen Face ID

Tuesday December 16, 2025 8:44 am PST by
Next year's iPhone 18 Pro and iPhone 18 Pro Max will be equipped with under-screen Face ID, and the front camera will be moved to the top-left corner of the screen, according to a new report from The Information's Wayne Ma and Qianer Liu. As a result of these changes, the report said the iPhone 18 Pro models will not have a pill-shaped Dynamic Island cutout at the top of the screen....
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 18 security update

Don't Want to Upgrade to iOS 26? Here's How to Stay on iOS 18 [Update: Now Unavailable]

Friday December 19, 2025 10:37 am PST by
Since the beginning of December, Apple has been pushing iPhone users who opted to stay on iOS 18 to install iOS 26 instead. Apple started by making the iOS 18 upgrades less visible, and has now transitioned to making new iOS 18 updates unavailable on any device capable of running iOS 26. If you have an iPhone 11 or later, Apple is no longer offering new versions of iOS 18, even though there...
apple beta 26 lineup

Apple's 2026 and 2027 Product Roadmap: Foldable iPhone, iPhone 18 Pro, M5 Macs, and More

Tuesday December 16, 2025 4:42 pm PST by
There has been a whirlwind of rumors over the last few days, sourced from leaked internal software designed for the iPhone and the Mac, and news sites like The Information. Below, we have a quick recap of everything we've heard this week, which serves as a guide to Apple's product plans in 2026 and beyond. We've organized the info by likely release date, though there are some products that...
iPhone Chips

Apple Clings to Samsung as RAM Prices Soar

Monday December 22, 2025 6:17 am PST by
Apple is significantly increasing its reliance on Samsung for iPhone memory as component prices surge, according to The Korea Economic Daily. Apple is said to be expanding the share of iPhone memory it sources from Samsung due to rapidly rising memory prices. The shift is expected to result in Samsung supplying roughly 60% to 70% of the low-power DRAM used in the iPhone 17, compared with a...