Apple Releases OS X Mavericks Developer Preview 5 with iBooks App

Apple has seeded the fifth Developer Preview of OS X Mavericks to developers, approximately two weeks after the release of the fourth developer preview. The release comes as Apple continues to work on restoring full functionality to its Developer Center after bringing software downloads back online last week.

mavericks
As noted by MacRumors forum members, the fifth Developer Preview of Mavericks includes both a new beta version of iPhoto (9.4.6) along with the iBooks app for Mac that was first unveiled at WWDC.

ibooks
OS X Mavericks, which is expected to be released this fall, includes multiple new features like a tabbed Finder, full screen dual monitor capabilities, Safari improvements, and a new Maps app. Developers can receive the update via the Software Update tool in the Mac App Store.

Apple has also simultaneously seeded a new version of OS X 10.8.5 to developers.

Related Forum: OS X Mavericks

Popular Stories

iPhone 17 Pro 34ths Perspective

iPhone 17 Pro Launching Later This Year With These 10 New Features

Sunday March 23, 2025 10:00 am PDT by
While the iPhone 17 Pro and iPhone 17 Pro Max are not expected to launch until September, there are already plenty of rumors about the devices. Below, we recap key changes rumored for the iPhone 17 Pro models as of March 2025: Aluminum frame: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and iPhone 16 Pro models have a titanium frame, and the iPhone ...
iOS 18

iOS 18.4 Expected Next Week - Here Are the Release Notes

Friday March 28, 2025 2:01 pm PDT by
With the second release candidate of iOS 18.4 that Apple seeded out today, the company finally provided us with release notes that give a full rundown on what to expect. There's an Apple Vision Pro app, new Apple Intelligence features for notifications and additional language support, plus an Apple News Food feature for Apple News+ subscribers, and several updates that should improve the...
Magic Mouse Green

What to Expect From the Magic Mouse 3

Saturday March 29, 2025 10:15 am PDT by
Apple is reportedly working on a new Magic Mouse. Below, we recap what to expect. The two key rumors for the Magic Mouse 3 so far include a relocated charging port, along with a more ergonomic design. It was briefly rumored that the Magic Mouse 3 would also feature voice control, but that was misinterpreted information. Relocated Charging Port While the Magic Mouse switched from...
top stories 2025 03 29

Top Stories: WWDC 2025 Announced, iPhone 17 Pro and iOS 19 Rumors, and More

Saturday March 29, 2025 6:00 am PDT by
Apple's big developer event is a little over two months away, and rumors about what we can expect to see in Apple's next major operating system updates are becoming increasingly frequent. A public release of iOS 18.4 is also imminent with a number of updates and improvements, although we won't be getting the major Apple Intelligence Siri upgrades that had reportedly been planned for this...
Foldable iPhone 2023 Feature Homescreen

Six Things to Know About Apple's Upcoming Foldable iPhone

Friday March 28, 2025 3:54 pm PDT by
We've been hearing rumors about a foldable iPhone for almost a decade now, but it looks like we might finally see the device come to fruition in 2026. We're going to be waiting many more months for the foldable iPhone, but so far we're hearing good things. Apple wants to make it creaseless. It's taken Apple multiple years to design a foldable iPhone that it's satisfied with because Apple ...
iOS 19 visionOS UI Elements

Apple Codename Provides Clue About iOS 19's Rumored New Design

Sunday March 30, 2025 6:40 am PDT by
Multiple sources have claimed that iOS 19 will introduce a new design with more translucent buttons, menus, notification banners, and more, and there is now another clue that points towards this glass-like appearance. Bloomberg's Mark Gurman today said the new design project is codenamed "Solarium" internally. A solarium is a room with glass walls that allow in plenty of sunlight, so this...
Facebook Feature

Facebook's New iPhone App Feature Turns the Clock Back to 2007

Thursday March 27, 2025 1:59 pm PDT by
In the mid-to-late 2000s, Facebook was all about staying connected with friends and family. However, as the social media platform added new features and grew over time, that core experience began to get drowned out. That changes starting now, according to Meta, which today introduced a new feature that will "bring back the joy" of classic Facebook. Specifically, Meta has redesigned the...
Foldable iPhone 2023 Feature Homescreen

iPhone Foldable Display Said to Feature iPad-Style 4:3 Aspect Ratio

Friday March 28, 2025 3:44 am PDT by
Apple's upcoming "iPhone Fold" will feature a foldable screen with a 4:3 aspect ratio, according to a Chinese leaker who previously leaked the book-style device's display dimensions. The Weibo-based account Digital Chat Station claims that Apple will adopt a "roughly" 4:3 aspect ratio on the inner display in order to achieve consistency between the outer display, as well as to ensure parity...

Top Rated Comments

AT06 Avatar
152 months ago
EVERYONE!!!! I'M UPDATING!


(Don't post it...no one cares)
Score: 33 Votes (Like | Disagree)
alexk403 Avatar
152 months ago
Here is iBooks
Score: 15 Votes (Like | Disagree)
Brian Y Avatar
152 months ago
This build, ignoring the normal "Safari is snappier" jokes, is ridiculously fast. I don't know what they've done under the hood, but damn they've done a good job of whatever they've done.
Score: 11 Votes (Like | Disagree)
Stuipdboy1000 Avatar
152 months ago
GIF files play in quicklook again!

Score: 9 Votes (Like | Disagree)
milo Avatar
152 months ago
Preview doesn't sync with anything on iOS. They should just kill it and roll all its features into iBooks.

Including things like opening and editing graphics files? That would be an odd addition to iBooks.
Score: 9 Votes (Like | Disagree)
KattDaDon Avatar
152 months ago
The new low battery logo when your batteries on your keyboard or magic mouse or trackpad is running low and need to be replaced or recharged
Score: 8 Votes (Like | Disagree)