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% |


