Windows 10 quality updates explained and the end of delta updates

Brian,

No, the change to support smaller updates isn't directly related to the system32 file updates you have seen.  There is a feature in windows called Windows Defender Application Guard which uses a client container (WIM file), and to minimize size it links to files outside the container.  For the links to work, it needs the exact same version of the file outside the container as the reference inside.  So these files get updated date/time stamps to ensure they stay in sync with the files in the container.  

Since we now use the small LCU technique, these date/time stamp changes have almost no impact on your overall download size fo the LCU.  Back in the full LCU days you would have had to download the entire file even if it was only a date/time change.

Glad to hear people are happy with the new smaller size LCU's!

Mike