Apple today seeded build 12F17 of OS X 10.8.5 to developers, offering a third version of the next Mac operating system update for testing. The release comes one week after the appearance of the previous beta of OS X 10.8.5, build 12F13.

12f17
As with previous betas, the update comes with no known issues and can be downloaded via Apple's Developer Page or through the software update tool in the Mac App Store.

Testing on OS X 10.8.5 comes as Apple is also continuing work on its next major version of OS X, Mavericks. Apple has already seeded two developer previews of OS X Mavericks and has announced that it will launch the new operating system to the public this fall.

Top Rated Comments

WildCowboy Avatar
115 months ago
Can any one explain to me why they are still doing this instead of putting extra work in Mavericks? Not that it bothers me, just asking

Mavericks isn't coming for months, and there are things in Mountain Lion that need fixing.
Score: 14 Votes (Like | Disagree)
beelzebubba Avatar
115 months ago
Can any one explain to me why they are still doing this instead of putting extra work in Mavericks? Not that it bothers me, just asking

Because many people still run ML and will even after Mavericks comes out. ML will likely be the end of the line for some older Macs and Apple has done fairly well in supporting legacy machines even past the five year end of life.
Score: 8 Votes (Like | Disagree)
laflores Avatar
115 months ago
Can any one explain to me why they are still doing this instead of putting extra work in Mavericks? Not that it bothers me, just asking

Because otherwise, people would start crying because "apple doesn't care about mountain lion any more" and some people will complain that mavericks is a piece of **** and they rather stay with snow leopard...
Score: 8 Votes (Like | Disagree)
rdlink Avatar
115 months ago
Gonna miss those cats when they're gone.
Score: 7 Votes (Like | Disagree)
iBug2 Avatar
115 months ago
(not trolling)

first time that safari has ever been snappier for me....running rMBP.....but it might also just be because safari in mavs is horrible

Are you kidding me? Safari 7.0 finally solves the memory issue which was introduced in 5.1 where when you open many tabs, web process just crashes. 7.0 does not have that, the single most annoying Safari bug in 2 years being solved finally.
Score: 5 Votes (Like | Disagree)
darkknight14 Avatar
115 months ago
Gonna miss those cats when they're gone.

Me too, every time I look at that new wave background it makes me want to go for a p***
Score: 4 Votes (Like | Disagree)

Popular Stories

maxresdefault

Samsung's New 32-Inch 'M8' Display vs. Apple's Studio Display

Thursday April 21, 2022 1:14 pm PDT by
Samsung recently introduced the M8, a new 32-inch 4K display that's priced at $700, making it less than half as expensive as the Studio Display from Apple. We picked up one of the displays and thought we'd compare it to the Studio Display in our latest YouTube video to see how it performs and whether you can save some money by going with a cheaper option. Subscribe to the MacRumors YouTube ...
macos server

Apple Discontinues macOS Server

Thursday April 21, 2022 10:30 am PDT by
Apple today announced in a support document that macOS Server is being discontinued as of April 21, 2022. Apple has been phasing out macOS Server for several years now, and the company is finally ready to shut it down for good. macOS Server 5.12.2 will be the last version of the app, and macOS Server services have now been migrated to macOS. Popular macOS Server capabilities that include...
apple cash visa hero

New Apple Cash Accounts Now Branded as Visa Cards

Friday April 22, 2022 5:55 am PDT by
The Apple Cash virtual debit card appears to be switching networks from Discover to Visa, as revealed in some updated images on Apple's website and noted by Twitter user @Kanjo. Since its launch, Apple Cash (originally known as Apple Pay Cash) has been operated through a partnership with Green Dot Bank on the Discover network. Discover is one of the smaller card networks and is accepted in...
USB C Over Lightning Feature

EU Moves One Step Closer to Mandating Apple to Switch iPhone, iPad, and AirPods to USB-C

Thursday April 21, 2022 7:54 am PDT by
Members of the European Parliament this week voted overwhelmingly in support of legislation that will compel Apple to offer a USB-C port on all iPhones, iPads, and AirPods in Europe. The proposal, known as a directive, will force all consumer electronics manufacturers who sell devices in Europe to ensure that all new phones, tablets, laptops, digital cameras, headphones, headsets, handheld...
iphone 13 pro and 14 pro render with background

iPhone 14 Pro Rumored to Feature Rounder Design to Match Larger Rear Camera Array

Thursday April 21, 2022 9:57 am PDT by
The iPhone 14 Pro could feature significantly rounder corners to match the larger rear camera array, according to Apple concept graphic renderer Ian Zelbo. Zelbo, who is best known for creating renders of upcoming Apple devices based on leaked information, including the Mac Studio, Studio Display, rumored mixed-reality headset, and more, believes that the iPhone 14 Pro models are likely to...
anker 735 panels

Anker's New 100W GaN Charger Features Three USB Ports, 34% Smaller Size Than Apple's 96W Charger

Friday April 22, 2022 8:46 am PDT by
Originally announced at CES back in January, the U.S. version of Anker's highly anticipated 736 USB charger is now available through Amazon for $75.99 in black/silver. Using Anker's GaN II technology, the 100-watt 736 charger is 34% smaller than Apple's 96-watt charger, yet offers the flexibility of three USB ports to charge multiple devices when needed. The 736 includes two USB-C ports...
iPhone 14 Purple Feature

iPhone 14 Lineup Color Options to Include All-New Purple Shade, Sketchy Rumor Claims

Friday April 22, 2022 8:01 am PDT by
The iPhone 14 lineup will be available in a refreshed lineup of color options, including an all-new purple color, and feature a new True Tone flash design, according to a sketchy rumor shared by an unverified source (via AppleTrack). The post, which has since been deleted, comes from an unverified source on Chinese social media site Weibo and claimed to reveal the full range of color options ...
Transcend JDL330 2

Transcend Announces 1TB JetDrive Lite 330 Expansion Card for 14-inch and 16-inch MacBook Pro

Thursday April 21, 2022 4:38 am PDT by
Transcend has announced a 1TB version of its JetDrive Lite 330 expansion cards for 14-inch and 16-inch MacBook Pro models, providing users of Apple's latest Macs with an affordable way to increase internal storage capacity. Transcend says the JetDrive Lite 330 cards are built with high-quality NAND flash, offering read and write speeds of up to 95MB/s and 75MB/s, respectively. Once the...
magsafe battery pack on iphone

MagSafe Battery Pack Now Able to Charge at Faster 7.5W Speed After Firmware Update

Wednesday April 20, 2022 1:09 pm PDT by
Apple yesterday released a firmware update designed for the MagSafe Battery Pack, and it turns out the new firmware enables 7.5W charging while on the go, up from the previous 5W limit. In an support document, Apple says that MagSafe Battery Pack owners can update their firmware to the new 2.7.b.0 release to get the faster 7.5W charging capabilities. Updating the MagSafe Battery Pack can...