OS X 10.9.3 arrives: proper 4K support, improved contact/calendar syncing and more

OS X 10.3 install pormpt

Following weeks of extensive testing and nearly a dozen betas seeded to its registered developers, Apple on Thursday released OS X 10.9.3 software update, the third major refresh of its latest Mavericks desktop operating system powering Macs.

It expectedly includes proper support for external 4K displays that makes everything crisper rathern than smaller. Other changes include more reliable contact and calendar syncing, the previously released Safari 7.0.3 and more…

Apple recommends that all Mavericks users apply the OS X 10.9.3 Software Update because it improves the stability, compatibility and security of your Mac.

With this update applied, owners of the late-2013 Mac Pro or late-2013 MacBook Pro with 15-inch Retina display can finally hook up their computer to an external 4K monitor and enjoy refresh rates of 60Hz.

More importantly, OS X 10.9.3 will use the pixel-doubling technique to enable a true Retina experience where the size of windows, icons, apps and other user interface elements remains unchanged while making everything sharper due to a greater pixel count.

OS X 10.9.3 changelog:

• Improves 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

Detailed information about this update is available in this support document. The security content of this update is detailed here.

You can apply the update by choosing Software Update… from the Finder’s Mac menu.

A restart is required.

If you’re going to be updating multiple Macs, save yourself time by grabbing either a standalone or combo installer. Then, copy it to a thumb drive and use it to update all your Macs without re-downloading the update on each machine.

The standalone OS X Mavericks 10.9.3 delta update weighing 461.7MB can be downloaded here (requires OS X 10.9.2).

The combo update for any Mavericks system (10.9, 10.9.1 and 10.9.2) is a 947.2MB download from Apple’s website.

The standalone OS X Mavericks installer listed in the Mac App Store remains stuck at version 10.9.2, but should soon be updated to include 10.9.3.

Let us know down in the comments about other changes not mentioned here, if any.

Apple also released iTunes 11.2 today.