Detailed Technical Look at Mac OS X 10.6 Snow Leopard

Ars Technica's John Siracusa has posted an exhaustive review of Mac OS X 10.6 Snow Leopard that delves deep into some of the technical changes behind Apple's latest operating system. The 23 page review covers topics that were previously covered under developer non disclosure agreements.

Siracusa covers technical topics such as Grand Central, OpenCL, as well as the typical user interface tweaks. They also explain why Mac OS X 10.6 does not boot into 64-bit mode and why you shouldn't really care:

If it makes you feel better to know that your kernel is operating more efficiently, and that, were you to actually have 96GB of RAM installed, you would not risk starving the kernel of address space, and if you don't have any 32-bit drivers that you absolutely need to use, then by all means, boot into the 64-bit kernel.

For everyone else, my advice is to be glad that K64 will be ready and waiting for you when you eventually do need it -- and please do encourage all the vendors that make kernel extensions that you care about to add K64 support as soon as possible.

Siracusa also explains that many of the underlying changes in Snow Leopard are to push developers into the right path for the future of Mac OS X, and the $29 price is meant to help drive user adoption. He also speculates that Snow Leopard is a prelude to radical new features in the next revision of Mac OS X.

As for the future, it's tempting to view Snow Leopard as the "tick" in a new Intel-style "tick-tock" release strategy for Mac OS X: radical new features in version 10.7 followed by more Snow-Leopard-style refinements in 10.8, and so on, alternating between "feature" and "refinement" releases. Apple has not even hinted that they're considering this type of plan, but I think there's a lot to recommend it.

Top Stories

tile sticker e1570533758981

Tile CEO: 'We Welcome Competition From Apple, But We Think It Needs to Be Fair'

Tuesday May 4, 2021 9:51 am PDT by
Just after Apple announced its AirTags, Tile CEO CJ Prober relayed his concerns about competing with Apple in the tracking space, and said that Tile would ask Congress to investigate Apple's business practices specific to Find My and item trackers. Prober this week did an interview with Bloomberg, where he further expanded on Tile's complaints about Apple and why he feels that Tile is...
apple watch ecg

Apple Watch Likely to Gain Blood Pressure, Blood Glucose, and Blood Alcohol Monitoring

Monday May 3, 2021 4:03 am PDT by
The Apple Watch may gain the ability to measure blood pressure, blood glucose, and blood alcohol levels, according to newly-revealed information about one of Apple's chosen business partners. Apple has been revealed to be the largest customer of the British electronics start-up Rockley Photonics, The Telegraph reports. Rockley Photonics has developed non-invasive optical sensors for...
signal instagram ads3

Signal Shares the Instagram Ads Facebook Doesn't Want You to See

Wednesday May 5, 2021 1:29 am PDT by
Encrypted messaging app Signal has had a series of Instagram ads blocked from the social media platform, after it attempted to show users how much data the Facebook-owned company collects about them and how it's used to push targeted ads. In a blog post, Signal described how it generated the ads to show users why they were seeing them, simply by declaring upfront the information that the...
fortnite apple logo 2

Epic CEO Tim Sweeney Admits App Store's 30% Cut Is Similar to Consoles, Would Have Accepted Special Deal With Apple

Tuesday May 4, 2021 1:54 pm PDT by
Apple's legal battle with Epic Games is continuing on, and during the second day of the trial, Epic Games' CEO Tim Sweeney continued his testimony against Apple. Sweeney was grilled by Apple's lawyers, and made several points seemingly favorable to Apple. In addition to mentioning how he prefers Apple's iPhone and values Apple's privacy policies that he's aiming to dismantle, Sweeney...
snapchat dark mode

Snapchat Rolls Out Dark Mode on iOS

Wednesday May 5, 2021 1:17 am PDT by
Nearly two years following the release of iOS and iPadOS 13, which included native, built-in, and systemwide dark mode, Snapchat, one of the world's most prominent social media networks, has finally rolled out a dark mode theme for iOS users. Snapchat began testing a dark mode theme of its app design late last year with a small group of iOS users. Now, Snapchat says that as of this week, it...
maxresdefault

Hands-On With Brydge's 12.9-Inch iPad Pro Keyboard With Trackpad

Tuesday May 4, 2021 11:48 am PDT by
Brydge has been making keyboards for Apple's iPads for years now, and the newest model, the Brydge 12.9 MAX+, is compatible with the third, fourth, and fifth-generation iPad Pro models, so it works even with the new mini-LED iPad Pro. Subscribe to the MacRumors YouTube channel for more videos. In our latest YouTube video, we checked out the new Brydge 12.9 MAX+ to see if it's a viable...
iphone 13 pro max dummy notch

iPhone 13 Pro Max Dummy Model Depicts Smaller Notch

Tuesday May 4, 2021 1:08 pm PDT by
Apple's iPhone 13 models are expected to feature a slimmed down notch, marking the first major change to the TrueDepth camera system since it was introduced in the 2017 iPhone X. We're still months away from the launch of the iPhone 13, but Lewis Hilsenteger of Unbox Therapy managed to get an iPhone 13 Pro Max dummy model that represents what we can expect from the new 2021 device. Dummy...
Flat 2021 MacBook Pro Mockup Feature 1

Mini-LED Display Production Improving for Redesigned MacBook Pro Models Later This Year

Monday May 3, 2021 8:33 am PDT by
Apple supplier TSMT, a key vendor involved in the production of mini-LED displays in the newly announced 12.9-inch iPad Pro, has been able to address technical challenges for the production of mini-LED displays to be used in the upcoming 14 and 16-inch redesigned MacBook Pro models. As reported by DigiTimes, TSMT had initially been facing production constraints with the circuit board and...
netflix sign up

Apple Discussed 'Punitive Measures' Against Netflix for Dropping In-App Purchases

Wednesday May 5, 2021 11:03 am PDT by
As the Epic Games v. Apple trial progresses into its third day, Apple's internal documents and communications with various companies are continuing to surface, giving us some insight into the dealings that Apple has had around the App Store. Back in December 2018, Netflix stopped offering in-app subscription options for new or resubscribing members and instead began requiring them to sign up ...
airtags

AirTag Owners Bemoan Inability to Let Others Track Their Items Via Family Sharing

Tuesday May 4, 2021 5:12 am PDT by
Apple's new AirTag item trackers have been making their way into the hands of customers since Friday, and while the company has tried to describe the ways that they can be used to find lost items, many users are still surprised and disappointed to learn that the location of an AirTag can't be shared with other family members. On the face of it, sharing the location of an AirTag via Apple's...