Apple Seeds New 13A598 Build of Mavericks to AppleSeed Members - MacRumors
Skip to Content

Apple Seeds New 13A598 Build of Mavericks to AppleSeed Members

Apple has seeded a new release of OS X Mavericks to members of the AppleSeed beta testing program, a little more than two weeks after the release of the eighth Developer Preview. DP 8 had a version number of 13A584, while today's release is build 13A598.

Appleseedbuild
Separately, 9to5Mac reports that this build may be a GM candidate, according to AppleSeed members, while other sources have said the final release build will be several versions newer. The OS was reportedly nearly ready for release a few weeks ago, but was pushed back because of "critical bugs".

Since being announced at WWDC, OS X Mavericks is said to have picked up a few minor unannounced features. Namely, the Messages and FaceTime applications have received the ability to block phone numbers and Apple IDs from sending the Mavericks user messages and/or FaceTime calls. This addition brings parity to iOS 7 and the two operating systems will sync in this manner.

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.

Apple is reportedly targeting a late October launch for OS X Mavericks.

Related Forum: OS X Mavericks

Popular Stories

macworld iphone 18 pro colors

iPhone 18 Pro's Four Rumored Colors Revealed, Including 'Dark Cherry'

Friday April 17, 2026 3:50 am PDT by
A source said to be familiar with Apple's supply chain today revealed the color options Apple is planning for the iPhone 18 Pro, iPhone 18 Pro Max, and the upcoming foldable iPhone. Image via Macworld. The information comes from Macworld, which says the signature new color for this year's Pro models will be Dark Cherry, a deep wine-like red. While other sources had previously reported on a...
ipad mini 7 feature red and blue

OLED iPad Mini: Release Date, Pricing, and What to Expect

Wednesday April 15, 2026 8:15 am PDT by
According to the latest rumors, Apple is close to launching its next-generation iPad mini. So what should we expect from the successor to the iPad mini 7 that Apple released over a year ago? Read on to find out. Processor and Performance Apple is working on a next-generation version of the iPad mini (codename J510/J511) that features the A19 Pro chip, according to information found in code...
macOS 27 on MacBook Pro

macOS 27 Will Mark the End of an Era

Saturday April 18, 2026 6:45 am PDT by
During its Platforms State of the Union segment at WWDC 2025, Apple revealed that macOS 26 Tahoe is the final major macOS version for Intel-based Macs. The upcoming macOS 27 release will be compatible with Apple silicon Macs only, meaning that you will need a Mac with an M-series chip or a MacBook Neo with an A18 Pro chip in order to install the software update. macOS 27 should be available...

Top Rated Comments

BornAgainMac Avatar
164 months ago
Fix the iMessage!

Maybe in Snow Mavericks.
Score: 25 Votes (Like | Disagree)
street.cory Avatar
164 months ago
I saw "Mavericks" and "Available in the Mac App Store" and wet my panties.
Score: 9 Votes (Like | Disagree)
164 months ago
i couldn't have been less excited about a release of a new OS.
block calls? useful for a phone but to me, not so much in my computer.
tabbed finder? nice but don't need.
full screen dual monitor? don't have two monitors.
safari improvements? ditched that in favour of chrome a while ago.
maps app? lol no thank you.
i'll be keeping ML which works great.


"i'll be keeping ML which works great."
You liar.
Score: 6 Votes (Like | Disagree)
164 months ago
Maybe they are colours

Notice that the desktop picture for mavericks has various shades of green.

Like this (13a598):



For DP8 we have 13a584 which is this shade:



In DP1 we had 13a476:

Score: 5 Votes (Like | Disagree)
Sky Blue Avatar
164 months ago
weird that they're not seeding it to devs yet.
Score: 5 Votes (Like | Disagree)
164 months ago
I wonder if they fixed the finder issue in mountain lion

----------

I agree, but I love tabs in Finder, but use TotalFinder. But there are a countless "under-the-hood" improvements that I am looking forward to.

Snow Leopard was the best ever and still is.
Score: 4 Votes (Like | Disagree)