Last week MS released Windows 10 1803 Build 17133.1 to the Insider Slow Ring. This will be the release Build on April 10. MS will use Cumulative Updates to bring this Build current before release to the public.
I updated my Laptop and it went real smooth and is running great. I did a clean install of NSBU and it fixed a problem with Automatic Live Updates that would not run.
All is good.
Jim 
Hi Krusty I did a search and I did not find any way to stop or disable edge so far I will keep looking. . I did install u block origin it seems to work ok
Hi Alf,
I changed my default browser to Firefox and that nonsense stopped. As soon as I made Edge the default it starts just after Windows boots again.
To clarify, Edge doesn't actually open, it just runs in the background for some stupid reason.
Hi Krusty Same here just updated today 5/3 after the last restart Edge showed up.. ALF60
Anyone else seeing Edge starting just after Windows boots? I'm seeing this on two machines.
1803 will not run on one of my machines, even after a clean install. 
You might find this interesting. From askwoody.com
Direct quote from a user.
Yes – exactly. I think that they partially shipped an Insider preview build with all the quirks and limitations. Because it has to be April because it’s called April update. Dead giveaway – look at your feedback frequency in Settings-Privacy-Diagnostics & Feedback…… Set to automatic (obviously!), greyed out… and “Windows Insider program manages this option”.
They actually shipped an insider build version (either wholly or in part) to millions of home users. It is beyond belief.
End quote. Looks like we're all Insiders whether we like it, or not !
Btw, don't forget to re-enable System restore in the new build.
Both my Intel machines got the update to 1803 without any issues. My AMD powered Gateway is another story. Windows blocked and deleted ALL the CCC drivers upon first restart with notifications. Working to figure out what the best drivers will be and get them on the system. My second AMD Zambezi powered gamer is being rebuilt due to one of my animals knocking it over and damaged the power button module. I will be testing it when I get it all together tomorrow. Over all not bad. I've seen other updates create far greater issues.
Cheers
Installed on both my systems, and stable so far !
Manually checked for updates on one 1709 machine and 1803 is installing now. I'll see how that goes and consider whether I should do my others or not.
Microsoft’s Windows 10 April 2018 Update arrives on Monday
Microsoft is finally naming its next Windows 10 update today. The Windows 10 April 2018 Update was originally scheduled to release on April 10th, but Microsoft hit a blocking bug that pushed the release to the very last day of April. Microsoft is now releasing its April update for people to manually download on Monday April 30th, before it’s more broadly rolled out to machines on May 8th.
I just got a update of the RP ring that brought me to Build 17134.5 so I assume this will be the build released on Monday.
Jim 
That was posted on a MS Blog today by Yusuf Mehdi / Corporate Vice President, Windows and Devices Group. The last page has this:
"The April 2018 Update will be available as a free download beginning Monday, April 30."
Jim
Indeed. Those will be the downloadable ISO's before the general release via windows updates on the 8th.
Cheers
Ask Woody and Windows 10 Forums now say Microsoft will release on Monday 30th April
Folks. It looks as though May 8th COULD be the release date: https://www.neowin.net/news/windows-10-april-update-will-start-rolling-out-on-may-8-according-to-leak
Ask Woody hasn't posted an update as of checking a short bit ago.
Cheers
PhoneMan:The Web was wrong. 1803 was NOT released today....
Hi PhoneMan:
Woody Leonhard's been trying to get an official response from his contacts at Microsoft - see his 10-Apr-2018 AskWoody.com thread Has the release of Windows 10 version 1803, due today, been delayed?.
Here is what the April patch Tuesday will be sending to various versions of Windows:
https://www.neowin.net/news/patch-tuesday-heres-whats-new-for-windows-7-and-windows-81
Edited: Windows 10 current build will be 16299.371 pending the Spring Update push.
Cheers
The Web was wrong. 1803 was NOT released today.
However Insider Release Preview was updated to 1803 Build 17133.73 so it is going forward.
Update was fast and all is good.
Jim
Yesterday MS released the Release Preview and it is the same 17133.1 build so it is looking good.
I updated a 2nd system yesterday and it went well and all my apps are still working.
I removed NSBU before I updated and removed a few leftover Norton Folders. I had to drill down in the sub folders and remove all the files first then worked back up the chain. I found some files in hlink folders that were stopping the removal of the parent folders. I removed them directly and all went well after that.
I now have the new NSBU 22.14.0.54 on all my systems and looking good.
Jim