Folks!! If you aren't already on Windows 10, version 1809 backup your data ASAP. Microsoft will be pushing 1809 to all Windows 10 machines soon albeit in a "phased" manner. Better safe than sorry with data loss.
Cheers
You are correct Jim. Can delay for 365 days now, I hadn't checked the setting in awhile on Pro. I have 1809 on all my machines as except one as well. The issue I have on my gamer is where 1809 didn't complete the install, shows in the updates as being there awaiting a restart. It even caused the darned thing to be non bootable for some time, I continued tinkering with it and got it restarted. Then imaged it with Macrium immediately. The only way I know of to correct the issue is to roll it back. Not willing to do that at this point. Too much stuff related Half Life 1/2 map creation is there that I don't want to chance losing.
You can defer for 365 days from release date.
I had it delayed but I turned it loose this week and updated 3 systems with no problems and it is working fine. I am now on 1809 Build 17763.253
I used Macrium Reflex Free to image my systems before I updated.
Jim 
You can defer the update IF you are running Pro or Enterprise editions but for only 120 days.
Yep. Whether you like it,or not. 
https://www.zdnet.com/article/windows-10-october-2018-update-finally-shifts-to-automatic-rollout/