Got a tip for us?Let us know

a. Send us an email
b. Anonymous form

Apple Releases OS X Mountain Lion Developer Preview 4

Monday June 11, 2012 5:34 PM PDT by Jordan Golson

Osxdp4
Apple released new versions of OS X Mountain Lion to developers today. Developer Preview 4 arrives with a build number of 12A239, while OS X Server Developer Preview 5 has build number 12S254j.

The release notes do not reveal any major updates to the software, but note a few minor issues with Setup Assistant, FileVault and QuickTime screen recording. Most significantly, the release does not ask developers to focus on any specific areas for testing, suggesting Mountain Lion will indeed be ready for release next month.

Mountain Lion was covered extensively at the WWDC Keynote this morning. It will be released in July on the Mac App Store for $19.99.

Top Rated Comments

RoelJuun

173 months ago

I just don't want Apple to rush Mountain Lion, fix all the bugs first and release it when it's ready. And write some great drivers for the older models too please, don't focus only on your newest creations.

Score: 6 Votes (Like | Disagree)

KALLT

173 months ago

Watching the keynote now... Uhh, where are the Dock indicators?

Theyre still there if you look closely.

Score: 3 Votes (Like | Disagree)

Yamcha

173 months ago

Just Installed Developer Preview 4 and It looks amazing, they've done an awesome job of making refinements on the UI..

Score: 2 Votes (Like | Disagree)

Cougarcat

173 months ago

isn't that in iOS not OS X?

Both versions got updates. OS X's received New Gesture-based tab navigation, unified bar, and cloud tabs.

Score: 2 Votes (Like | Disagree)

Cougarcat

173 months ago

no safari update?

Yes, Safari 6...

Score: 2 Votes (Like | Disagree)

GIZBUG

173 months ago

im assuming we will see a GM build next than the final? as for Facebook integration.. maybe 10.8.1?

FB is already integrated..............

http://www.cultofmac.com/173035/apple-releases-os-x-mountain-lion-developer-preview-4-with-facebook-integration/?utm_medium=twit&utm_campaign=spread-us

Score: 2 Votes (Like | Disagree)

Read All Comments

Popular Stories

iOS 26's Liquid Glass Design Draws Criticism From Users

Wednesday September 17, 2025 2:56 pm PDT by Juli Clover

It's been two days since iOS 26 was released, and Apple's new Liquid Glass design is even more divisive than expected. Any major design change can create controversy as people get used to the new look, but the MacRumors forums, Reddit, Apple Support Communities, and social media sites seem to feature more criticism than praise as people discuss the update. Complaints There are a long...

• 611 comments

Two iPhone 17 Pro and iPhone Air Colors Appear to Scratch More Easily

Friday September 19, 2025 10:02 am PDT by Joe Rossignol

As reported by Bloomberg today, some of the new iPhone 17 Pro and iPhone Air models on display at Apple Stores today are already scratched and scuffed. French blog Consomac also reported on this topic. The scratches appear to be most prominent on models with darker finishes, including the iPhone 17 Pro and Pro Max in Deep Blue, and the iPhone Air in Space Black. Images Credit: Consoma ...

• 288 comments

iOS 26.0.1 Coming Soon, Likely With iPhone Air and iPhone 17 Pro Fix

Thursday September 18, 2025 9:17 am PDT by Joe Rossignol

Apple is preparing to release iOS 26.0.1, according to a private account on X with a proven track record of sharing information about future iOS versions. The update will have a build number of 23A350, or similar, the account said. It is likely that iOS 26.0.1 will fix a camera-related bug on the new iPhone Air and iPhone 17 Pro models. In his iPhone Air review, CNN Underscored's Henry T. ...

• 64 comments

Apple's Rumored MacBook Pro Redesign: 6 New Features Anticipated

Wednesday September 17, 2025 4:26 am PDT by Tim Hardwick

Apple in October 2024 overhauled its 14-inch and 16-inch MacBook Pro models, adding M4, M4 Pro, and M4 Max chips, Thunderbolt 5 ports on higher-end models, display changes, and more. That's quite a lot of updates in one go, but if you think this means a further major refresh for the ‌MacBook Pro‌ is now several years away, think again. Bloomberg's Mark Gurman has said he expects only a small ...

• 69 comments

iOS 26.1 to iOS 26.4: Here Are 5 New Features to Expect on Your iPhone

Tuesday September 16, 2025 11:17 am PDT by Joe Rossignol

iOS 26 was finally released on Monday, but the software train never stops, and the first developer beta of iOS 26.1 will likely be released soon. iOS 18.1 was an anomaly, as the first developer beta of that version was released in late July last year, to allow for early testing of Apple Intelligence features. The first betas of iOS 15.1, iOS 16.1, and iOS 17.1 were all released in the second ...

• 40 comments

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

Sunday September 14, 2025 8:45 am PDT by Joe Rossignol

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...

• 83 comments