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Note: This is a Developer Preview. You must be a registered Apple Mac Developer to download this update.

OS X Yosemite is Apple's newest operating system for Mac.

An elegant design that feels entirely fresh, yet inherently familiar. The apps you use every day, enhanced with new features. And a completely new relationship between your Mac and iOS devices. OS X Yosemite will change how you see your Mac. And what you can do with it.

Redesigned interface.
With OS X Yosemite, we set out to elevate the more...

What's New

Version 10.10 DP4:
  • iTunes 12 - The newest Yosemite beta includes a revamped version of iTunes with a simple, streamlined design and support for Family Sharing.
  • Other additions - Yosemite Recovery Update 1.0, OS X Server 4.0 Developer Preview, and Apple Configurator 1.7 beta

Requirements

OS X 10.10 Yosemite or later

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OS X Yosemite User Discussion

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Most Helpful Reviews...

MacUpdate most helpful reviews user icon

I love the new OS X Yosemite interface, no matter what other people say. It's not as flat as you think and if you don't like the new dock, there is probably a 70% chance some 3rd party app will let you get back the 3D dock, just more...

7 people found this review helpful
Version 10.10 DP3
MacUpdate most helpful reviews user icon
from Drbroom

I am a developer and all I can say is... This "next version reminds me of "Yosemite Sam".

I really miss Steve!

7 people found this review helpful
Version 10.10 DP3
Sort by: Time | Smiles
Alex Member IconReview+67
Alex
+0

Great time saving features.

Reply0 replies
Version 10.10 DP4
AlexanderH5727 Member IconReview+4
AlexanderH5727
+7

I love the new OS X Yosemite interface, no matter what other people say. It's not as flat as you think and if you don't like the new dock, there is probably a 70% chance some 3rd party app will let you get back the 3D dock, just like Jailbreak offer for iOS 7 users.

It's clean, fresh, still has a depth to it, the icons are perfect (except the trashcan of course), Notification Center is more attractive to use with the new Widgets system, since the widget system for Dashboard has never attracted me and many others I know of, if you don't like the translucency you can turn it off and so on.

I really don't care what people say about the user interface. I can see how people running on older hardware won't upgrade, since it will probably have poor performance. But people hated the new iOS 7 as well until they just had to live with it. Now the percentage of iPhones running iOS 7 is at 90%, only 9% are running iOS 6.x. I bet it will be similar for OS X Yosemite as well.

It's one of those things you either accept or don't. But if you don't like it, don't whine about it. It won't change anything.

Reply3 replies
Version 10.10 DP3
FredB3964
+4

News flash - people upgraded to iOS7 because it was pushed to the phone and once the upgrade was done, there was no way to downgrade whether one liked it or not.

Also - as customers, we are certainly NOT obligated to accept everything a company does and love it. Complaining, and giving feedback isn't whining - it's giving feedback. And if a company doesn't change something in response to overwhelming complaints, they're not a very good company.

I can see from your first sentence that you have a hardon for apple products. That doesn't mean than anyone who disagrees with what you say is wrong or whining.

RavenNevermore
+2

"And if a company doesn't change something in response to overwhelming complaints, they're not a very good company."

That that assumes you know better than Apple? Sometimes customer's whining is just whining.

I think iOS 7 is much improved over iOS 6. iOS 6's interface was a mess; it had disparate elements that didn't it in, like that weird dark blue alert, and those shiny icons were getting long in the tooth. Especially with Android copying iOS's look.

I'm happy to see that OS X is going to lose the shiny UI bits, and the integration with iOS is a great feature.

Lvdoc
+0

I just use Flavours and theme my Mac. But I have to agree with FredB3964. Sometimes customers do know better than Apple. Apple has been known to remove features from programs, only to bring them back after sufficient customer feedback. I've been using Macs since 1987, and in the nearly 30 years, Apple had made some bad decisions. No company is perfect.

Drbroom Member IconReview+50
Drbroom
+7

I am a developer and all I can say is... This "next version reminds me of "Yosemite Sam".

I really miss Steve!

Reply3 replies
Version 10.10 DP3
Pik80
+7

I don't understand what your review is trying to say.

Cattus-Thraex
+2

Ok, we all miss Steve, but can you englighten me/us what do the two stars mean?

RavenNevermore
+1

What makes you think Steve didn't have anything to do with this? Of course he did. Steve's decisions will be seen for some time to come. Plus he hand picked the people working on OS X and iOS.

Albabe Member IconComment+779
Albabe
+1

Has anyone migrated their Apple Mail to Yosemite yet? I'm curious how its doing?

Reply8 replies
Version 10.10 DP3
Cookie08
+1

It works really well Yosemite is fast and smooth.
iMac 27in 16gig ram i5 mid 2011 and MackBook Pro mid 2012 8gig ram i7 also fast and smooth most app work Adobe CC does not reconise the System other stuff works.

Really looking forward to moving all over to the new system

Pik80
+1

@Cookie08
Do you know how good Adobe CS6 works?

Cookie08
+0

Have not tried the Photoshop C6 jet but is should be fine all the other apps which hook into the system work even Suitcase Fusion is working etc

Macmuser
+0

I switch back and forth between Yosemite and Mavericks, with a shared Users folder. No problems with Mail on either of them, other than the few beta glitches already known about in Yosemite.

Pik80
+0

I am actually more concerned about knowing if CS6 works since it is the last non-subscription version.

Macmuser
+0

Pik80 replied on 10 Jul 2014
I am actually more concerned about knowing if CS6 works since it is the last non-subscription version.

I was replying to Albabe who asked specifically about Mail. Your query about CS6 was in his question thread.

ylluminate
+0

@Macmuser you really share a user folder? That is indeed remarkable as I have always been met with failure in the past when trying to do that; at the very least having strange problems and worst things blowing up entirely and so I always had to not use it as shared. Mail must use the same format and config altogether in this jump.

Macmuser
+1

"ylluminate replied on 11 Jul 2014
@Macmuser you really share a user folder?"

Have been since the early days of MacOSX and never had a problem. First by using terminal commands, then the Advanced tab in Users and Groups. But by far the easiest way is by copying current GM System onto another partition with SuperDuper, setting Shared Users and Applications and upgrading that to whatever System you want. I also have a 10.6.8 System available but I don't use shared Users with that so it is a time warp.

Priosantos-Jan Member IconReview+40
Priosantos-Jan
+2

I really like the new look. Crisp and clean.
Looking forward upgrading.

Reply0 replies
Version 10.10 DP2
Prince_Isaac Member IconComment+298
Prince_Isaac
+1

Interested in exploring "Dark Mode?" I came across this tidbit last night:

You can test out Dark Mode by entering the following code into Terminal, logging out and logging back in:

sudo defaults write /Library/Preferences/.GlobalPreferences AppleInterfaceTheme Dark.

To reverse Dark Mode to Light Mode, change “Dark” to “Light” and log out and log back in.

Reply3 replies
Version 10.10 DP2
Umaromc
+1

That would be great! I use a dark gray color with XtraFinder to make it easy on my eyes.

Tomeg
+0

Curious - I copy/pasted the above code, Terminal executed with no problem, I logged out and logged in, and nothing's changed.
I'll try restart see if that helps.

Tomeg
+2

silly me - I don't have the developer 10.10 preview, stuck in Mavericks, oh well worth the try, DM sounds and looks good!

Wayne-Welsh Member IconComment+20
Wayne-Welsh
+4

I'm happy for those of you who use both a Mac AND iOS. I love Mac and have used a Mac for over 20 years. I do NOT care for iOS and WORRY THAT THE MAC OS WILL BECOME TOO MUCH LIKE iOS. I certainly hope not!!! I much prefer Android and use an Android phone and tablet.

Reply16 replies
Version 10.10 DP2
Vyselegend
+2

Im looking forward to not upgrading and sticking with Mountain Lion, the last good Mac OS, for the foreseeable future.

Albabe
+2

@ Vyselegend

I still love Snow Leopard... but Marvericks is not too bad... 'cept for the Apple authoritarian developers losing the "Open All Folders in New Window" function... and the crappy monotone folders... and.... sigh.

_rick_v_
+5

I've heard of people sticking with Snow Leopard for various reasons. But if you've moved passed that, then it makes sense to upgrade all the way, especially now that upgrades are free! Mavericks is basically Mountain Lion-improved.

Jump on in, the water's nice!

Pik80
+3

Why would anyone still be on Snow Leopard today?

B. Jefferson Le Blanc
+9

@ Pik80: Well, let's see: They have an older Mac that doesn't support Lion and above; or they don't like the Goth interface introduced in Lion; OS X 10.6.8 does everything they need their Mac to do right now; there are no features in Lion and above they want or need; they don't like change and avoid most upgrades if they can because of the alterations in their work-flow that upgrades entail.

Of course snobs like you lack the imagination and empathy to envision or understand these reasons, but they're real enough to millions of Mac users who are sticking with Snow Leopard - despite your ill conceived distain.

Personally I use Mavericks because I have to for my work, not because I like it any better than Snow Leopard. As for OS X 10.10, we'll just have to see how well it works once it's out of beta and publicly released.

Pik80
+3

"They don't like change" LOL if something works a lot better then an older version not taking a couple of minutes to learn it is absurd. And it's not like the basic idea of the OS has even changed that much. The very basic idea of the OS is pretty much like it was in the original Mac OS 10.0. It's not like there have been any radical changes to the interface like there has been in Windows 8. It's amazing people take up space in forums even bring up silly issues like this.

Canadianpj
+2

@B. Jefferson Le Blanc my goodness, a high opinion of yourself right? Simple question and a snotty reply.

A lot of people do keep to it because of hardware, and others keep to it thinking if they hold their breath long enough Apple undo all the changes since then and go back to the way things "used to be".

Which will never happen. This is the direction things are going, like it or not.

Pik80
+2

I understand people that don't have the money to buy the latest hardware so they stick with the old OS. What is laughable are the people who say SL is better then Mavericks and continue to stay on SL even though they are running Mavericks capable hardware.

Tester_x
+2

Snow Leopard is also the last OS to support Rosetta (allows PowerPC applications to run on Intel Mac), there are still very good games and someone may be using an old PowerPC application for work.

Pik80
+1

Nobody should still be using old power PC apps.

G. I.
+2

@Pik80 WTF are you to tell what people should or shouldn't do?

Pik80
+2

Rational. If someone continues to use old inferior PowerPC software when they could be using better software that takes advantage of new APIs that's kind of dumb.

B. Jefferson Le Blanc
+2

Pik80: Now who has a high opinion of himself? If people don't agree with you they are not "rational"? One man's "rational" is another man's "You don't know what the bleep you're talking about."

"if something works a lot better then an older version not taking a couple of minutes to learn it is absurd...." That's one very big "if." In fact you make my point for me. OS X has indeed changed substantially over the years, and Yosemite means more change still. Not every one of those changes was "a lot better." Some were decidedly kludgy and buggy and otherwise awful. Very often the changes in the operating system and in software take more than a few minutes to learn - which you would know if you had ever learned anything - say, a complex and powerful program like Microsoft Word (not to say Excel) or Adobe Photoshop. Both apps have changed radically over the years and every upgrade means learning new ways to do the same old thing. It's simply the case that those changes are great for some people and a pain in the neck for others. We don't all live in neat little boxes into which change fits snugly.

Not everyone feels compelled to have the latest and greatest of everything. For them, people jumping at every upgrade are the irrational ones.

@ Canadianpj: It was not a simple question. It was a snide, snotty and dismissive question. Just because you're blind to such innuendo don't expect everyone else to be. As for my opinion of myself, I occasionally take exception to people who think their way of thinking and doing things is the only right way. Arrogance of that sort is obnoxious and deserves to be challenged. If you want to come down on the side of the snobs, if that's your comfort zone, it's your prerogative. I wouldn't stop you if I could, though I might call your choice into question for its lazy, hazy thinking.

Pik80
+1

I understand sticking with an old version if a new version has bugs. However after many months go by and the bugs have gotten ironed out it's time to jump ship.

And, yes, the basic idea concept of Mac OS X has really not changed that much since 2001. The product has obviously been significantly upgraded but just looking at the interface it's the same basic idea as 10.0. Apple has been tweeking their OS not overhauling it which is why the version numbering has been point releases for the past 14 years. To say that it takes time to learn it is hysterical! Hardly anything has changed.

iodrew
+0

"WORRY THAT THE MAC OS WILL BECOME TOO MUCH LIKE iOS."
Um, that's been the exact intent for a few years now. So spare the REVELATIONS, please.

DigiMonk
+0

I wonder how the market is in 20 years. Mobile phones flying and walking around, giving "mobile" another meaning.... lol. They would probably fight in the street. "I'm better". "I'm lighter" LOL

Nontroppo Member IconComment+515
Nontroppo
+0

I love this much more open approach from Apple, great to have access to some of the developer info from WWDC and an open beta period, I hope those of us who elect to beta test can have a positive impact before final release (i.e. we provide more signal than noise)...

Reply0 replies
Version 10.10 DP2
Foulger Member IconComment+279
Foulger
+1

Looking forward to the promised beta version for those who registered as beta testers

Reply0 replies
Version 10.10 DP2
user icon+106
piquadratpi2
Version 10.10 DP3
> 4 5

Ratings

Overall
(5)
Current Version (10.x)
(5)

Details

Downloads 316,056
Version Downloads 8,870
Type Utilities / System
License Free
Date 21 Jul 2014
Platform Intel 64 / OS X / Intel 32
Price Free