10.8.4 Build 12E47

OS X 10.8.4 Beta Build 12E47 Combo Update (SHA1 4a430bd98b56ef0e9f5a9e87c3d0baf21263f1cb)
OS X 10.8.4 Beta Build 12E47 Delta Update (SHA1 3cdcdfc90a0939acaa9d0b1f243a4af4b4b1146f)

Source: http://blog.shade.sh/