Mac OS X 10.6.3 Build 10D573 Seeded to Developers - MacRumorsOpen MenuShow RoundupsShow Forums menuVisit ForumsOpen Sidebar
Skip to Content

Mac OS X 10.6.3 Build 10D573 Seeded to Developers

161301 snow leopard box

Apple is continuing its rapid-fire seeding of Mac OS X 10.6.3 builds today, pushing out Build 10D573 to developers. The new build is only a single increment over the previous build issued last Thursday. World of Apple details the seed notes, which reveal that Apple has asked developers to continue focusing on GraphicsDrivers, Images & Photos, Mail, QuickTime, and Security Certificates for testing.

The seed notes also reveal one additional fix since the last build, involving an issue with recurring events in iCal when working with Exchange servers. The new build also continues to carry a single documented known issue involving the reoffering of the Safari 4.0.5 update issued earlier this month.

We have continued to expect an imminent release of Mac OS X 10.6.3, but Apple's release schedule remains unpredictable as it puts the finishing touches on the update. Late last week, an iMac user reported receiving a prerelease version of Mac OS X 10.6.3 via Software Update. That version was the previous Build 10D572, and it is unknown why the user's machine was able to access the download, although it does suggest that work on Mac OS X 10.6.3 is very close to completion.

Popular Stories

iOS 27 Next to iPhone

Here's When iOS 27 Rolls Out Today in Every Time Zone [Update: It's Out]

Sunday September 13, 2026 3:00 am PDT by
Update 10:04 a.m.: iOS 27 is rolling out now, though it may take a bit for all users to see it, so keep checking! Apple is about to release iOS 27, which will finally deliver more advanced Siri AI capabilities as well as a variety of other refinements, improvements, and new features to iPhones. It's Apple's biggest software update of the year, and Apple announced at Wednesday's iPhone event...
iOS 27 Icon iPhone

iOS 27 Available Now With These 8 New Features

Monday September 14, 2026 9:00 am PDT by
Update — 10 a.m. Pacific Time: Apple has released iOS 27. During its iPhone 18 Pro and iPhone Duo event last week, Apple announced that iOS 27 will be released widely on Monday, September 14. iOS 27 should be available around 10 a.m. Pacific Time / 1 p.m. Eastern Time today via the Settings app, under General → Software Update. Below, we have highlighted eight new features and...
Apple iCloud Plus expansion hero

iCloud+ Now Includes Apple TV, Apple Arcade, and Curated Apple Music Stations in Over 100 Countries

Tuesday September 15, 2026 1:43 am PDT by
Apple today announced a new subscription initiative that turns paid iCloud+ subscriptions into a broader services bundle in more than 100 countries. In select countries, Apple says every paid iCloud+ plan, including the cheapest 50GB tier, now includes Apple TV and Apple Arcade "at no additional cost," while family sharing extends the storage, TV and Arcade access to up to five people....

🔗 Related Apple News & Rumors

Stay updated with the latest Apple ecosystem news and verified rumors