OS X Mavericks 10.9.3 release nears with bolstered 4K display support

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Nearly two months after providing developers with the first beta, Apple is closing in on releasing OS X Mavericks 10.9.3 to the public. OS X 10.9.3 will mark the third point-release update to OS X Mavericks, which arrived on the Mac App Store last October. Earlier this week, Apple provided build 13D55 of 10.9.3 to developers, and Apple, today, provided employees with a newer 13D57 build. In addition to the increase in seed frequency, today’s internal seed includes a set of release notes. The inclusion of release notes in beta OS X releases typically indicates that a public release is close…

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Apple seeds new OS X 10.9.3 beta build (13D55) to developers

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Apple has just seeded a new build (13D55) of OS X Mavericks to developers. The update is currently showing for users on the beta from the Dev Center and doesn’t seem to be showing up yet for members of the recently-reopened AppleSeed program. This release is expected to include improved USB syncing in iTunes and enhanced support for 4k monitors on newer MacBook Pros.

Typically Apple increases the frequency of beta builds as it gets closer to the public release of a piece of software. The previous OS X build was released one week ago, indicating that Apple is possibly preparing to release 10.9.3 in the very near future. The full release notes for this build are below, and once again point developers to areas such as graphics and audio drivers, Safari, Mail, and iTunes USB syncing of contacts and calendars as key areas to test.

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Mavericks How-to: Block contacts in FaceTime and iMessage on OS X

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With the highly anticipated update to Mavericks 10.9.2, users gained the ability to block contacts in FaceTime and iMessage. This has been a long-awaited addition, since iOS 7 received this feature five months ago. If you previously blocked people in iOS 7, the block list syncs over from your iOS devices to your Mac through iCloud. Make sure Documents and Data is turned on in order for that to occur.

Now with Mavericks, you are able to block certain phone numbers from iMessaging or FaceTiming you without needing to get up and grab your iOS device…

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OS X 10.9.2 breaks AirPlay Mirroring and desktop extensions to external monitors for some users

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A number of Mac users in an Apple Support Communities thread are reporting that Apple’s 10.9.2 update to Mavericks has broken AirPlay Mirroring to Apple TV and the ability to extend desktops to external monitors.

I just updated to 10.9.2 and now when i try and airplay mirror to my Apple TV, it sends the audio but just shows a black screen and i can’t drag anything to it. It doesn’t show any of the options for external displays in the displays section of System Preferences …  Read more