Today Apple released the third beta of OS X 10.10.5 to developers, nearly one week after seeding the second OS X 10.0.5 and more than a month after releasing 10.10.4 to the public.
Today’s beta, build 14F25a, can be downloaded through the Software Update mechanism in the Mac App Store or through the Apple Developer Center. The previous released beta versions doesn’t include any consumer-facing changes, so it’s likely that this update focuses on behind-the-scenes bug fixes and performance enhancements. But Where as OS X 10.10.5 second beta introduced a fix for DYLD_PRINT_TO_FILE exploit that’s been making headlines over the last few days, and the security flaw will be patched as soon as OS X 10.10.5 is released to the public.
As we are just a couple of months away from the public release of OS X 10.11 EI Capitan and this OS X 10.10.5 will likely be one of the last updates to Yosemite, designed to prepare the operating system for its imminent retirement. It will, of course, continue to get bug fixes and minor repairs even after El Capitan’s release to patch security flaws and fix other issues.
Till date OS X Yosemite has received four updates, where first two updates brought bug fixes and security improvements and the third update is the most significant to Yosemite, introduced the new Photos app, Force Touch APIs, new emoji features, and more.
Currently version OS X 10.10.4 introduced multiple bug fixes and under-the-hood performance improvements, including the removal of the problematic Discoveryd process.