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Apple dumps discoveryd and fixes Photos and Mail bugs in OS X 10.10.4

As usual, the update also contains other bug fixes and security updates.

Apple dumps discoveryd and fixes Photos and Mail bugs in OS X 10.10.4
Apple

The next major release of OS X looms like some kind of mountain over some kind of park, but Yosemite isn't done yet. Today Apple released the final version of OS X 10.10, a bugfix update that comes almost three months after 10.10.3.

The first change in OS X 10.10.4 is to "networking reliability," which is likely a reference to the replacement of discoveryd, a new-but-flaky DNS service introduced in Yosemite. It has been replaced with what appears to be mDNSresponder, the service that handled discoveryd's tasks in previous versions of OS X.

Otherwise, 10.10.4 fixes a list of minor problems with specific apps. The Migration Assistant has gotten more reliable, and "an issue that prevented certain external monitors from functioning properly" has been resolved. A bug that would delay outgoing messages in Mail has been fixed, and sites in Safari can no longer keep you from closing or switching away from the tab by generating multiple JavaScript alerts.

The new Photos app is a big focus area—the process for importing iPhoto and Aperture libraries to the new Photos app should be more reliable now, as should iCloud Photo Library syncing. A bug that would crash the app after importing Leica DNG files has been fixed, too.

You can grab the new update through the Updates tab of the App Store or by downloading the delta and combo updaters from Apple's download page when they show up.

Channel Ars Technica