It’s been 2 months since the beta for OS X 10.9.3 was released and earlier this week the build 13D55 was released for developers and another version for employees. Something interesting pointed out was that the internal seed provided comes with a few release notes. We’ve been told that when this happens, we know that a public release is nearing.

Some interesting new features include:



  • Ability to push 4K on the Mac Pro and the 15-inch Retina Macbook Pro.
  • Improvements to existing sync of contacts and calenders from Mac to iOS device.
  • The usual improvements of security and bug fixes.
  • iMessage and FaceTime contact block has been resolved.

Here are the Release Notes provided:

The OS X Mavericks 10.9.3 Update is recommended for all OS X Mavericks users. It improves the stability, compatibility, and security of your Mac.This update:

Improved 4K display support on Mac Pro (Late 2013) and MacBook Pro with 15-inch Retina display (Late 2013)
Adds the ability to sync contacts and calendars between a Mac and iOS Device using a USB connection
Improves the reliability of VPN connections using IPsec
Includes Safari 7.0.3