Apple Seeds OS X 10.9.5 Beta 1
Apple has released the first beta of OS X 10.9.5 to developers. This beta comes a month after the release of 10.9.4. At this point it’s unclear what is new in this beta, but Apple is likely to focus on USB, Graphics, and Safari improvements.
Developers can update to beta 1 in the Mac App Store > Updates > Software updates > OS X 10.9.5 seed 1. If you don’t have it yet you can download it for the first time from the Mac Developer Center.