I highly doubt that. Microsoft is not that superstitious on releasing final 20H2 on the 13th of October on the 13th of October? I have my doubts on that
They already are published on techbench, so it's a matter of waiting for MSFT to push the button for us to be able to get a probably already superseded build on ISO.
All new public updates: https://forums.mydigitallife.net/threads/windows-10-hotfix-repository.57050/page-541#post-1623217
Looks like nothing to do with the date, but serious bugs affecting some computer models (and they won't like it). A good last minute decision. If you want to be funny, try something else.