Apple Refers to OS X as 'MacOS' in Environmental Webpage Update

With the launch of the Apple Watch and the fourth-generation Apple TV, Apple debuted two new operating systems -- watchOS and tvOS -- both of which share a common naming scheme with iOS, the operating system that runs on iPhones and iPads.

Apple's unified naming system has led to speculation that OS X, the operating system for the Mac, is due for a name change to MacOS, bringing it in line with watchOS, tvOS, and iOS. Apple won't unveil the name of the next-generation Mac operating system until its 2016 Worldwide Developers Conference, but a new update to the company's website suggests MacOS is on the minds of Apple employees and a candidate for the name of the next upgrade.

maclineup
On a webpage that was updated this morning to share Apple's most recent environmental report, a Frequently Asked Questions section makes a mention of "MacOS." When discussing power consumption of products, MacOS is listed alongside tvOS, iOS, and watchOS.

To model customer use, we measure the power consumed by a product while it is running in a simulated scenario. Daily usage patterns are specific to each product and are a mixture of actual and modeled customer use data. Years of use, which are based on first owners, are assumed to be four years for MacOS and tvOS devices and three years for iOS and watchOS devices.

A mention of "MacOS" was also found buried Library files in OS X 10.11.4 in late March, but the file, "FUFlightViewController_macOS.nib," has been present in the Mac operating system since August of 2015, a month before the public launch of OS X El Capitan.

If Apple does make the switch from "OS X" to "MacOS," it is not clear if the company will stick with naming each iteration after California landmarks, a tradition that started with OS X Mavericks in 2013. Prior to that date, Mac updates were named after large cats, but since then, we've seen OS X Mavericks, OS X Yosemite, and OS X El Capitan. With tvOS, watchOS, and iOS, operating system upgrades follow a number-based naming scheme, with the current versions being tvOS 9.2, watchOS 2.2, and iOS 9.3.1.

Apple is expected to unveil the next version of its Mac operating system, OS X 10.12, at its 2016 Worldwide Developers Conference, which will likely be held from June 13 to June 17. Little is known about OS X 10.12 at this time, but it may be a more significant update than OS X 10.11, introducing Siri support for the Mac for the first time.

Update: Apple has now removed the reference to "MacOS" in its environmental report and replaced it with "OS X".

Tag: macOS
Related Forum: macOS Sierra

Popular Stories

imac video apple feature

Apple Unveils First New Products of 2026

Monday January 26, 2026 1:55 pm PST by
Apple today introduced its first two physical products of 2026: a second-generation AirTag and the Black Unity Connection Braided Solo Loop for the Apple Watch. Read our coverage of each announcement to learn more:Apple Unveils New AirTag With Longer Range, Louder Speaker, and More Apple Introduces New Black Unity Apple Watch BandBoth the new AirTag and the Black Unity Connection Braided...
Apple Logo Black

Apple Just Made Its Second-Biggest Acquisition Ever After Beats

Thursday January 29, 2026 10:07 am PST by
Apple today confirmed to Reuters that it has acquired Q.ai, an Israeli startup that is working on artificial intelligence technology for audio. Apple paid close to $2 billion for Q.ai, according to sources cited by the Financial Times. That would make this Apple's second-biggest acquisition ever, after it paid $3 billion for the popular headphone and audio brand Beats in 2014. Q.ai has...
iPhone 5s

iPhone 5s Gets New Software Update 13 Years After Launch

Monday January 26, 2026 3:56 pm PST by
Alongside iOS 26.2.1, Apple today released an updated version of iOS 12 for devices that are still running that operating system update, eight years after the software was first released. iOS 12.5.8 is available for the iPhone 5s and the iPhone 6, meaning Apple is continuing to support these devices for 13 and 12 years after launch, respectively. The iPhone 5s came out in September 2013,...
Apple Creator Studio

Apple's Next Launch is Today

Tuesday January 27, 2026 2:39 pm PST by
Update: Apple Creator Studio is now available. Apple Creator Studio launches this Wednesday, January 28. The all-in-one subscription provides access to the Final Cut Pro, Logic Pro, Pixelmator Pro, Motion, Compressor, and MainStage apps, with U.S. pricing set at $12.99 per month or $129 per year. A subscription to Apple Creator Studio also unlocks "intelligent features" and "premium...
Apple Event Logo

Apple Teases 'Innovations That Have Never Been Seen Before' This Year

Friday January 30, 2026 5:40 am PST by
Apple CEO Tim Cook believes that his company will have opportunities to deliver "innovations that have never been seen before" this year. "As I said at the beginning of my remarks, this was, in so many ways, a remarkable quarter for Apple, and we're excited for all the opportunities we'll have in the year ahead to deliver innovations that have never been seen before and enrich the lives of...

Top Rated Comments

Bubba Satori Avatar
128 months ago
I wonder how many devs it took to pull this off?

Score: 30 Votes (Like | Disagree)
\-V-/ Avatar
128 months ago
If they're going to go with that naming scheme they might as well change iOS to phoneOS.


I wonder how many devs it took to pull this off?

One of the most annoying quotes of all time. Nobody wanted the Mac Pro to be reinvented into an un-upgradeable trash can. They just wanted it to have the latest specs/features. His commentary on the justification for 16 GB phones is also annoying.
Score: 25 Votes (Like | Disagree)
Bbqthis Avatar
128 months ago
For the love of Pete. OS X or macOS. Don't rebrand it as MacOS. It follows zero capitalization standards for the brand.
Score: 21 Votes (Like | Disagree)
garylapointe Avatar
128 months ago


If Apple does make the switch from "OS X" to "MacOS," it is not clear if the company will stick with naming each iteration after California landmarks, a tradition that started with OS X Mavericks in 2013. Prior to that date, Mac updates were named after large cats, but since then, we've seen OS X Mavericks, OS X Yosemite, and OS X El Capitan.
Is this a concern for anyone?

Name it after different types of fungi and I'm still using it...

Gary
Score: 17 Votes (Like | Disagree)
keysofanxiety Avatar
128 months ago
Sorry, Apple. You got 1 name change, and you've used it. If you're changing it again, I'm calling it 'Mac OS X' again. With that exact spacing and capitalization.
You're a true hero of our time. Thank you for having the courage to take this stand.
Score: 14 Votes (Like | Disagree)
talmy Avatar
128 months ago
It's just going back to having Mac (or mac) in the name, like it was in Mac OS X 10.7 and earlier.

Frankly if they get rid of the "X" it is an improvement because it gets rid of the redundancy. Consider OS X 10.11 the "X" and the "10" refer to the same thing. macOS 10.12 makes a lot of sense to me.
Score: 12 Votes (Like | Disagree)