Listing of What’s in the Mac OS X 10.0.1 Update. One thing about this system update, it was the first time I can ever remember a system update being released and applied to so many systems without so much as an inkling from the OS vendor as to what got changed. No documentation whatsoever about the update beyond one paragraph on the Apple Mac OS X page. Since you apply it through their software update system panel, you don’t download the update as a separate file. I find it sort of disturbing to not know what got changed, what got improved, and what was new. Here we are four days later, and there still isn’t anything to read except articles on third party sites like the one linked above. Not good.