This showed up today and I would like to know if anyone else has installed it.
If you bothered to do a web search you will find plenty info
@Pondus,
I did search. This is the spring creator’s update. Version 2004.
EDIT:
typo
If you did a search then you should have got enough information to make an informed judgement.
https://www.google.co.uk/search?q=feature+update+windows+2004
https://www.zdnet.com/article/microsofts-windows-10-may-2020-update-is-starting-to-roll-out-to-mainstream-users/
This Feature update like those before it happen automatically over a period of time (MS can’t update every system at once). If anything some would consider you fortunate to get it so soon (I haven’t 
).
Desktop features and changes on Windows 10 version 2004
As part of the desktop changes, Windows 10 version 2004 brings new features to the Lock screen, Start menu, Windows Search, virtual desktops, Cortana, File Explorer, Task Manager, and Action center.
Lock screen
As part of the Lock screen improvements, Windows 10 version 2004 now includes support to authenticate into your account using your PIN while in Safe mode. In the past, you were still required to use a password while in Safe mode, even though PIN authentication was configured.
How do I get a PIN? I think I’ll wait awhile before. downloading and installing
You may also wish to look at this topic:
https://forum.avast.com/index.php?topic=156141.0
Some recent posts there have referred to Win10 2004 update.