Similar to OS X Yosemite 10.10.5 Beta 1, the second build of OS X Yosemite 10.10.5 is a minor update featuring bug fixes, as well as under-the-hood enhancements such as improvements in stability, compatibility, and security of your Mac. Although, Apple is asking developers to focus on Mail and Photos in this build.
OS X Yosemite 10.10.5 Beta 2 is now available through Software Update or via the Mac Dev Center for registered developers.
