I've seen the same thing happen over the years where you know a certain update/patch has been released because others have got it, it's showing on the MS website as being released, etc.  However, you will not get it initially....maybe for days or longer no matter how many times you click check for updates.     And supposedly this is one of these updates that is not hardware/software depending on your machine....it's an update that applies to all machines running Win 10. 

 

Since I have two Lenovo laptops, both running Win 10 Pro, there have been times one laptop will get an update immediately, but the other one might not get it until days later even with me clicking the Check for Updates...as in, Give me the update now MS!   

 

Then I think to myself that MS is all-knowing and has a unknown plan for me.  So I just wait until they reveal that plan to me (usually at a bad time).

 

Mine updated itself the other day- I have found on startup it has been sticking or very slow.

I'm deferring this update on ALL my PCs for a while

 

Worth following.....  https://www.tenforums.com/windows-10-news/108824-windows-10-april-2018-update-now-available-monday-april-30-a.html 

Well, today is Patch Tuesday/8 May when the 1803 is suppose to become available to the masses by the built-in Windows update check.  That is, Windows doing its automatic daily check for updates unless the daily check has been paused/deactivated/delayed/etc;....not where a person initiates an update check like clicking Check for Updates or forces 1803 download/install some other way. 

 

I think MS normally opens the patch/update barn door around 10am U.S. Pacific Time which is midnight in Thailand since Thailand time is 14 hours ahead of Pacific Time right now.   So, I expect the first few seconds of 9 May here in Thailand....a little less than 4 hours from now....the update will be made available through the normal update process.

 

Expect that is when much more Win 10 users cross-feed will hit the social media circuits....cross-feed from a lot of folks that are novices with Windows...folks who did not actively seek out earliest install of the latest version....probably a lot of folks who knew nothing of a pending new major update of Win 10.