OS X 10.10.5 Beta 2 Available for Developers
Mac developers choosing to run OS X Yosemite will find OS X 10.10.5 beta 2 available to download. The new build arrives as 14F19a and appears to focus primarily on bug fixes and improvements to the Mac operating system.
Those developers eligible to download the second beta of 10.10.5 can find it available now from the Software Update mechanism of the Mac App Store. A reboot is required to complete the installation.
At the moment, OS X 10.10.4 remains the most modern stable build of OS X Yosemite. Presumably OS X 10.10.5 will be a fairly minor release aimed at resolving lingering issues with the prior update.
There is no known timeline for OS X 10.10.5 to be available to the general public, but typically betas go through a variety of versions before Apple releases them to everyone.
It’s unclear how many users are interested in running the 10.10.5 beta builds, as most Mac users who are able to run beta versions of the OS seem to be focusing on the next generation release of OS X El Capitan, which is due to the public this fall. El Capitan beta 5 with the accompanying 10.11 Public Beta 3 build are the most recent releases of OS X 10.11 available for testing.
If you’re thinking about running beta system software, always maintain a stable backup of the Mac, and preferably run the beta releases on a secondary nonessential machine.