Right now, for the time being, everyone is the same....
Production machines and Windows Insiders, everyone who has upgraded today should have the same as the insider build 17134.1
EXCEPT: For a few of us who actually got (KB4135051) which bumped our insider machines to 17134.5
Not everyone did, and....
I'm thinking, since the Microsoft Catalog doesn't even have that KB that it was a one off and somehow unique for some insider machines.
As far as a clean install goes....
I'll be doing mine in a couple days, after I see how this behaves as an upgrade.
It's something I always do on my production machine with a new OS.
It's a bit of a pain, but it gets me back to a pristine registry and gives me an opportunity to only reinstall programs I actually need and use, as I need them.