Apple Seeds Second OS X 10.10.5 Yosemite Beta to Developers
Apple today seeded the second beta of OS X 10.10.5 to developers, two weeks after seeding the first 10.10.5 beta and one month after releasing OS X 10.10.4 to the public. Because we're just a couple of months away from the public release of OS X 10.11 El Capitan, it's possible that OS X 10.10.5 may be one of the last updates to Yosemite.
Today's beta, build number 14F19a, can be downloaded through the Software Update mechanism in the Mac App Store or through the Apple Developer Center.
The first OS X 10.10.5 beta did not appear to include any consumer-facing changes, so it's likely that this update focuses on behind-the-scenes bug fixes and performance enhancements.
Over the course of its lifespan, OS X Yosemite has received four updates. The first two brought bug fixes and security improvements, while OS X 10.10.3, the most significant update to Yosemite, introduced the new Photos app, Force Touch APIs, new emoji features, and more.
OS X 10.10.4, the current version of Yosemite, also focused on bug fixes and stability improvements, most notably introducing TRIM support for third-party SSDs and eliminating the Discoveryd process that caused ongoing connectivity issues in the OS.