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
160 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
160 months ago
I just assumed everyone was on 10.9 already.
Score: 5 Votes (Like | Disagree)
Mr. Retrofire Avatar
160 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
160 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
160 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
160 months ago
Every update is appreciated. 10.9 is still far away.
Score: 2 Votes (Like | Disagree)

Popular Stories

iOS 26 on iPhone Feature

Here's When iOS 26 Rolls Out Today in Every Time Zone [Update: Out Now!]

Monday September 15, 2025 12:00 am PDT by
Update 10:06 a.m.: iOS 26 is rolling out now, though it may take a bit for all users to see it, so keep checking! Today's the day! Apple is about to release iOS 26, which will deliver the biggest redesign since iOS 7 and bring a range of new features and improvements to iPhones worldwide. It's Apple's biggest software update of the year, and Apple announced at last week's iPhone event that...
Tim Cook Rainbow

Apple Reportedly Plans to Launch These 10 Products in 'Coming Months'

Sunday September 14, 2025 8:45 am PDT by
Apple's annual September event is now in the rearview mirror, with the iPhone 17, iPhone 17 Pro, iPhone 17 Pro Max, iPhone Air, Apple Watch Series 11, Apple Watch Ultra 3, Apple Watch SE 3, and AirPods Pro 3 set to launch this Friday, September 19. As always, there is more to come. In his Power On newsletter today, Bloomberg's Mark Gurman said Apple plans to release many products in the...
iOS 26 Battery Glass Feature

Apple Says Installing iOS 26 Might Impact Battery Life

Monday September 15, 2025 10:56 am PDT by
In the iOS 26 release notes, Apple is warning iPhone users that installing the new software might have a temporary impact on battery life, which is normal. A new support document explains that major iOS updates require background setup like indexing data and files for search, downloading new assets, and updating apps. Further, Apple says that new features could require more resources,...
apple n1 chip

Apple's New N1 Chip in iPhone 17, iPhone 17 Pro, and iPhone Air Has a Wi-Fi 7 Limitation

Saturday September 13, 2025 10:01 am PDT by
The latest iPhone 17, iPhone 17 Pro, iPhone 17 Pro Max, and iPhone Air models are equipped with Apple's all-new N1 chip for Wi-Fi 7, Bluetooth 6, and Thread connectivity. However, the chip has a Wi-Fi 7 bandwidth limitation. According to FCC documents reviewed by MacRumors, the N1 chip in all of the new iPhone models supports up to 160 MHz channel bandwidth for Wi-Fi 7, short of the...
iphone 17 lineup

iPhone 17 Models Launch on September 19 With These New Features

Friday September 12, 2025 7:58 am PDT by
Apple will launch its new iPhone 17 lineup and ultra-thin iPhone Air in stores on Friday, September 19, and the company has already shown off the new devices at its fall event, which ran with the the tagline "Awe dropping." The iPhone 17 series brings a host of new features and enhancements. Here's a rundown of the biggest upgrades and changes: iPhone 17 Display Changes The iPhone...
AirPods Pro Firmware Feature

AirPods Pro 2 and AirPods 4 Get iOS 26 Features With New Firmware Update

Monday September 15, 2025 10:50 am PDT by
Apple today released updated firmware for the AirPods Pro 2 and the AirPods 4, introducing support for the new AirPods features that are included in iOS 26, iPadOS 26, and macOS Tahoe. The firmware has a build number of 8A356, and it replaces the current 7E93 firmware. With Apple's new software updates, the AirPods Pro 2 and the AirPods 4 support better audio quality for phone calls and...
iPhone 17 Pro Air Boxes

iPhone Air and iPhone 17 Pro Boxes Revealed

Sunday September 14, 2025 1:36 pm PDT by
T-Mobile President Jon Freier today shared real-world photos of Apple's boxes for the iPhone Air, iPhone 17 Pro, and iPhone 17 models, which launch on Friday. Image Credit: Jon Freier Apple has typically included iPhone box renders in its product environmental reports, but it did not do so for the latest models. However, Apple's iPhone Upgrade Program page does offer some images of the boxes, ...