Roundup of OS X 10.8 Mountain Lion Features and Notes - MacRumorsOpen MenuShow RoundupsShow Forums menuVisit ForumsOpen Sidebar
Skip to Content

Roundup of OS X 10.8 Mountain Lion Features and Notes

Apple surprised everyone this morning with a developer preview of OS X 10.8 Mountain Lion. The new release brings a number of iOS-like features to the Mac, as detailed in this video:


- Messages - new version of iChat with iMessage support
- Reminders - create lists and tasks, synced via iCloud
- Notes - create notes, synced via iCloud
- Notification Center - on screen pop-up notifications
- Share Sheets - share buttons to email, tweet, message, etc...
- Game Center - social gaming center for Mac
- AirPlay Mirroring - broadcast your Mac's screen to your Apple TV

Apple also released a public beta of the Messages App for OS X Lion users and is available today.

Apple did give some of the media early previews of Mountain Lion, which we suspect may have been the unusual media event that had been predicted. OS X Mountain Lion is available to registered developers today, and will be go on sale in late summer 2012.

Roundup of our earlier coverage:

- OS X Mountain Lion's Documents in the Cloud Simplifies File Access Across Devices
- Apple Officially Drops 'Mac' Name from OS X Mountain Lion
- Software Update to Move Inside Mac App Store in OS X Mountain Lion
- OS X Mountain Lion Limits Apps to Mac App Store, Signed Apps by Default
- OS X Mountain Lion Drops Support for Many 2006-2008 Macs with Integrated Graphics
- OS X Mountain Lion to Be True Mac App Store Exclusive

We've also opened an OS X 10.8 Mountain Lion forum for questions and discussions about Apple's new operating system.

Popular Stories

American Express Gold Apple Pay Feature

American Express Announces New Apple Pay Feature

Tuesday June 30, 2026 10:27 am PDT by
American Express today announced that you can now redeem Membership Rewards points when checking out with Apple Pay on the web and in apps on the iPhone and iPad. When checking out with Apple Pay on iOS 18 or iPadOS 18 or later, tap on your eligible American Express card (Platinum, Gold, Green, and others) and select the Membership Rewards points option. You can use points to cover all or...
Apple Acquires Award Winning App Play Feature

Apple Acquires Award-Winning App 'Play'

Monday June 29, 2026 7:39 am PDT by
In February, Apple notified the European Commission that it would be acquiring certain assets from and have the right to hire certain employees from Rabbit 3 Times, the company behind the award-winning app design tool Play. The notification was published on the European Commission's website this week, following a four-month waiting period. Play was a Mac and iPhone app that allowed designers ...
series 10 apple watch titanium digital crown

Report: Apple Watch Redesign Coming Next Year With New Band System

Tuesday June 30, 2026 8:45 am PDT by
A "major overhaul" of the Apple Watch's design is due to arrive next year with a new system for connecting bands, according to a known Weibo leaker. In a set of recent posts, the leaker known as "Instant Digital" linked the new claim to older rumors about an "Apple Watch X" model, which was said to introduce a fresh design and break compatibility with the existing watch band system. Citing...

Top Rated Comments

188 months ago
No Pro

They haven't mentioned a single feature related to pro users. Nothing. It's all about being a consumer, consuming video and sharing your unemployment stories with your friends.

P.S. Why am I a newbie even though i joined in 2003?
Score: 27 Votes (Like | Disagree)
ECUpirate44 Avatar
188 months ago


And we need game center on our Macs why?

To play games with friends? It's a perfectly understandable addition to OSX.
Score: 24 Votes (Like | Disagree)
188 months ago
I wonder if we'll get "One more thing" at WWDC. Maybe Siri for Mac?
Score: 17 Votes (Like | Disagree)
PBP Avatar
188 months ago
This annoying checkbox from Lion is finally fixed!
It remembers his 'state'. So you don't have to uncheck it anymore.
roundup of os x 10 8 mountain lion features and notes image
Score: 16 Votes (Like | Disagree)
Prodo123 Avatar
188 months ago
I hate how Notification Center pushes the entire desktop away to the left. A semi-transparent sliding overlay similar to Growl's default UI would be much more elegant.
Score: 15 Votes (Like | Disagree)
AustinIllini Avatar
188 months ago
iOS X 10.9
Dandelion. Segue to flower names
Score: 12 Votes (Like | Disagree)

🔗 Related Apple News & Rumors

Stay updated with the latest Apple ecosystem news and verified rumors