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
weaterneyes
165 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
portishead
165 months ago
I just assumed everyone was on 10.9 already.
Score: 5 Votes (Like | Disagree)
Mr. Retrofire Avatar
Mr. Retrofire
165 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
katewes
165 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
decimortis
165 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
Mike MA
165 months ago
Every update is appreciated. 10.9 is still far away.
Score: 2 Votes (Like | Disagree)
Read All Comments

Popular Stories

Apple Logo Zoomed

Tim Cook Teases Plans for Apple's Upcoming 50th Anniversary

Thursday February 5, 2026 12:54 pm PST by
Apple turns 50 this year, and its CEO Tim Cook has promised to celebrate the milestone. The big day falls on April 1, 2026. "I've been unusually reflective lately about Apple because we have been working on what do we do to mark this moment," Cook told employees today, according to Bloomberg's Mark Gurman. "When you really stop and pause and think about the last 50 years, it makes your heart ...
Read Full Article • 144 comments
iOS 26

iOS 26.3 and iOS 26.4 Will Add These New Features to Your iPhone

Tuesday February 3, 2026 7:47 am PST by
While the iOS 26.3 Release Candidate is now available ahead of a public release, the first iOS 26.4 beta is likely still at least a week away. Following beta testing, iOS 26.4 will likely be released to the general public in March or April. Below, we have recapped known or rumored iOS 26.3 and iOS 26.4 features so far. iOS 26.3 iPhone to Android Transfer Tool iOS 26.3 makes it easier...
Read Full Article • 37 comments
imac video apple feature

Apple Makes Its Second-Biggest Acquisition Ever

Tuesday February 3, 2026 12:45 pm PST by
Apple recently acquired Israeli startup Q.ai for close to $2 billion, according to Financial Times sources. That would make this Apple's second-biggest acquisition ever, after it paid $3 billion for the popular headphone maker Beats in 2014. This is also the largest known Apple acquisition since the company purchased Intel's smartphone modem business and patents for $1 billion in 2019....
Read Full Article
wwdc sans text feature

Apple Rumored to Announce New Product on February 19

Thursday February 5, 2026 12:22 pm PST by
Apple plans to announce the iPhone 17e on Thursday, February 19, according to Macwelt, the German equivalent of Macworld. The report, citing industry sources, is available in English on Macworld. Apple announced the iPhone 16e on Wednesday, February 19 last year, so the iPhone 17e would be unveiled exactly one year later if this rumor is accurate. It is quite uncommon for Apple to unveil...
Read Full Article
Finder Siri Feature

Why Apple's iOS 26.4 Siri Upgrade Will Be Bigger Than Originally Promised

Friday February 6, 2026 3:06 pm PST by
In the iOS 26.4 update that's coming this spring, Apple will introduce a new version of Siri that's going to overhaul how we interact with the personal assistant and what it's able to do. The iOS 26.4 version of Siri won't work like ChatGPT or Claude, but it will rely on large language models (LLMs) and has been updated from the ground up. Upgraded Architecture The next-generation...
Read Full Article • 146 comments