Update: OS X 10.8.3 and Xcode 4.6.1

Those two updates are for OS X and Xcode respectively.

Here is the space difference between before and after:

Command: df -lak	Used(Kilobytes in 1024-blocks)
Before OS X	...240,680
After OS X	...200,292
Difference (A-B)	-40,388
After Xcode	...677,316
Difference (A-B)	477,024
Capacity	45%