Microsoft has released its newest build of Windows 10 to the public which is dated 1903.  We are not seeing it come thru windows updates yet but you can manually update if you’d like at

https://www.microsoft.com/en-us/software-download/windows10

The few we have upgraded in the story are working fine, but please be patient during the upgrade!  If its a laptop make sure the power is plugged in and try to avoid it going to sleep