OS X Mavericks 10.9 Developer Preview 3 Build 13A510D Update Only

Apple Releases Developer Preview of OS X Mavericks With More Than 200 New Features

The next version of the Mac operating system, OS X 10.9, is officially labeled as OS X Mavericks. Mavericks, named after an epic surfing spot in northern California, has a lot of new features, but also represents a change in naming conventions away from the familiar cat themes. In future versions of OS X will follow the same naming convention and all be named after inspirational places throughout California, where Apple is located.

The OS X v10.9 Developer Preview supports the following Macs:
- iMac (Mid-2007 or later)
- MacBook (13-inch Aluminum, Late 2008), (13-inch, Early 2009 or later)
- MacBook Pro (13-inch, Mid-2009 or later), (15-inch, Mid/Late 2007 or later), (17-inch, Late 2007 or later)
- MacBook Air (Late 2008 or later)
- Mac Mini (Early 2009 or later)
- Mac Pro (Early 2008 or later)
- Xserve (Early 2009)

In the changelog accompanying OS X Mavericks DP3, Apple mentions a few tweaks in iCloud and iCloud Keychain, third-party application installation, and other (general) changes.

For instance, after installing Developer Preview 3, developers need to re-enable iCloud Keychain in the iCloud preferences pane.

Screen recordings made in Developer Preview 3 won’t work with earlier releases of OS X, and Aperture may unexpectedly close when exporting an image in full screen.