Screenshot 2014-08-07 10.15.37

Apple today has provided developers with the second beta of the upcoming OS X Mavericks 10.9.5 release. The new build number is 13F12 and it is available on the Mac Developer Center and in Software Update in the Mac App Store for those running the earlier build. Apple asks developers to focus testing on USB, USB Smart Cards, Safari, Graphics, and Thunderbolt.