In addition to iOS 8.4, Apple has now publicly released OS X 10.10.4 to all users. The point update focuses on security and stability improvements with a fix for notable networking issues with OS X Yosemite as well as fixes for Mail, improvements to Photos migration from iPhoto and Aperture, and more. Apple first began testing the update to the Mac with developers in late April.
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The new OS X version is available through the Mac App Store. Developers and public beta testers running preview releases of OS X 10.10.4 can find the update through the Updates tab as well.