Apple today seeded the fifth beta of OS X 10.10.4 to developers and public beta testers, approximately two weeks after releasing the fourth OS X 10.10.4 beta and two months after releasing the first OS X 10.10.4 beta. OS X 10.10.4 has been in testing since mid-April, following the early April release of OS X 10.10.3, which included the new Photos for OS X app.
The new beta, build 14E33b, can downloaded through the Software Update mechanism in the Mac App Store or through the Mac Developer Center.
OS X 10.10.3 brought several consumer-facing changes including the new Photos for OS X app, a redesigned emoji picker, and diversified emoji, but OS X 10.10.4 appears to be an under-the-hood update that brings performance enhancements and bug fixes.
Thus far, OS X 10.10.4 betas have not included outward facing design changes or feature additions, but the last beta introduced a significant behind-the-scenes update that may improve networking performance for users who have experienced issues with OS X Yosemite.
Discoveryd, a somewhat problematic networking process that has been linked to multiple bugs in OS X 10.10, was removed in favor of the older bug-free mDNSresponder.
It is not clear when Apple plans to release OS X 10.10.4 to the public, but the fact that we’ve now received five betas suggests we may be nearing the end of the beta testing period.
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Apple Seeds Fifth OS X 10.10.4 Yosemite Beta to Developers and Public Beta Testers