OS X 10.9.4 Mavericks Update Released For Developers
Apple has released another beta update of OS X 10.9.4 Mavericks operating system to developers. The build number of the beta update is 13E25; the previous build 13E19 was released on 19 June.
It remains unclear what improvements the 10.9.4 update will bring to Mavericks, but it is likely to include bug fixes and stability enhancements. The update is available via Software Update on 10.9.4 systems and is also available on the Mac developer center.